Baselayer - Long Sleeves

NEW Season Baselayer
NEW Season Baselayer
17 products
Zip Neck
Zip Neck
12 products
Crew Neck
Crew Neck
24 products
Icebreaker Baselayers
Icebreaker Baselayers
2 products
Patagonia Baselayers
Patagonia Baselayers
5 products
Rab Baselayers
Rab Baselayers
4 products
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  • Mammut Aenergy FL Longsleeve Mammut Aenergy FL Longsleeve
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    Mammut

    Aenergy FL Longsleeve

    Weighs
    113g
    Weighs:
    113g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Crew Neck

    Mammut Aenergy FL Longsleeve combines exceptional lightness, advanced functionality, and sustainability. Strategically placed mesh ventilation zones promote breathability and moisture management. Mammut says:  Our lightest and most technical fi…

    £64.99
    RRP: £69.99 | Save: £5.00
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  • Sonic LS Zip Sonic LS Zip
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    Rab

    Sonic LS Zip

    Weighs
    113g
    Weighs:
    113g (Medium)
    Neck Style:
    Zip Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    Protective, quick-wicking, and lightweight, this comfortable long-sleeve, half-zip tee is perfect for mountain running and fast hiking. Rab says: The Sonic LS Zip is an efficient, long sleeve layer, ideal for mountain running and fast hiking. Design…

    £39.99
    RRP: £44.99 | Save: £5.00
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  • Core Hoodie OMM Core Hoodie
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    OMM

    Core Hoodie

    Weighs
    116g
    Eco Initiatives:
    Recycled Content, Bluesign
    Weighs:
    116g (Medium)
    Insulation Level:
    Moderate Insulation
    Zip length:
    No Zip
    Hooded:
    Yes
    Baselayer Fabric:
    Synthetic

    The Core Hoodie is a minimalist piece designed for active insulation. It adds warmth but is highly breathable and focused on wicking moisture and regulating body temperature when exercising. OMM says A new concept in active insulation, the OMM Core.…

    £94.99
    RRP: £99.99 | Save: £5.00
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  • Sonic Ultra Zip Sonic Ultra Zip
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    Rab

    Sonic Ultra Zip

    Weighs
    119g
    Weighs:
    119g (Medium)
    Neck Style:
    Zip Neck
    Baselayer Fit:
    Athletic/Close Fit
    Baselayer Fabric:
    Synthetic

    UOG TOP PICK - Sonic Ultra Zip Built with quick-wicking Motiv Aero fabric and a movement optimised cut, this mountain running, long sleeve tee is designed to keep you cool, comfortable and protected. It's one of our favourite baselayers and one of ou…

    £49.99
    RRP: £59.99 | Save: £10.00
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  • Montane Dart Lite Long Sleeve T-Shirt - Past Season Colours Montane Dart Lite Long Sleeve T-Shirt - Past Season Colours
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    Montane

    Dart Lite Long Sleeve T-Shirt - Past Season Colours

    Weighs
    121g
    Weighs:
    121g (size medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Crew Neck

    UOG TOP PICK - Dart Lite Long Sleeve T-Shirt Dart Lite Long Sleeve T-Shirt is a fully recycled Synthetic technical T-Shirt/base layer that offers a highly breathable and odour-resistant layer. It's one of our favourite baselayers and one of our top..…

    £34.99
    RRP: £49.99 | Save: £15.00
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  • Dart Lite Long Sleeve T-Shirt Dart Lite Long Sleeve T-Shirt
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    Montane

    Dart Lite Long Sleeve T-Shirt

    Weighs
    121g
    Weighs:
    121g (size medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Crew Neck

    UOG TOP PICK - Dart Lite Long Sleeve T-Shirt Dart Lite Long Sleeve T-Shirt is a fully recycled Synthetic technical T-Shirt/base layer that offers a highly breathable and odour-resistant layer. It's one of our favourite baselayers and one of our top..…

    £42.99
    RRP: £49.99 | Save: £7.00
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  • Aenergy FL Half Zip Longsleeve Aenergy FL Half Zip Longsleeve
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    Mammut

    Aenergy FL Half Zip Longsleeve

    Actual:
    129g
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Zip Neck

    A well-fitting base layer with an impressively large zip that ventilates heat quickly when you need it to. Mammut says:  Our lightest and most technical first layer is a true multi-sport MVP. Airy and breathable with offset merrow stitching, it…

    £69.99
    RRP: £74.99 | Save: £5.00
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  • Force LS Tee Force LS Tee
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    Rab

    Force LS Tee

    Weighs
    130g
    Weighs:
    130g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Athletic/Close Fit
    Baselayer Fabric:
    Synthetic

    UOG TOP PICK - Force LS Tee Rab's Force LS Tee is a next-to-skin technical short sleeve tee with Polygiene odour control treatment, designed for comfort and freshness during active use, one of our top picks! Rab says: Designed comfort next to skin, t…

    £34.99
    RRP: £39.99 | Save: £5.00
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  • Dart Long Sleeve T-Shirt Dart Long Sleeve T-Shirt
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    Montane

    Dart Long Sleeve T-Shirt

    Weighs
    141g
    Weighs:
    141g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Crew Neck

    A staple in Montane's iconic Dart range, this long-sleeved T-shirt continues to deliver reliable performance and comfort for year-round mountain adventures. Montane says:  The Dart Long Sleeve T-Shirt is a classic, all-season, all-mountain techn…

    £30.99
    RRP: £34.99 | Save: £4.00
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  • Ignis LS Zip Tee Ignis LS Zip Tee
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    Mountain Equipment

    Ignis LS Zip Tee

    Weighs
    141g
    Weighs:
    141g (size medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Zip Neck

    UOG TOP PICK -Ignis LS Zip Tee The Mountain Equipment Ignis LS Zip Tee is a fabulous wicking next-to-skin layer that uses Polygiene to reduce odour build-up. It has a deep zip for venting and is, one of our top picks! Mountain Equipment says:  T…

    £39.99
    RRP: £44.99 | Save: £5.00
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  • Abisko Day Hike LS Fjallraven Abisko Day Hike LS
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    Fjallraven

    Abisko Day Hike LS

    Weighs
    142g
    Weighs:
    142g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Crew Neck

    Lightweight, long-sleeved top for hiking and outdoor life in warm, sunny climates. Produced without PFCs, made for a lifetime of use. Fjallraven says:  Lightweight, functional long-sleeved top for men that is suitable for outdoor life and...

    £64.99
    RRP: £74.99 | Save: £10.00
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  • L/S Capilene Cool Daily Shirt L/S Capilene Cool Daily Shirt
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    Patagonia

    L/S Capilene Cool Daily Shirt

    Weighs
    146g
    Weighs:
    146g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    Patagonia's most versatile performance knit for use on trails or on the water provides UPF sun protection and HeiQ Fresh durable odor control. Made from 50–100% recycled content, Patagonia tech tees keep you comfortable when you’re going …

    £44.99
    RRP: £49.99 | Save: £5.00
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  • Berghaus 24/7 Tech Tee LS Crew - Past Season Colour Berghaus 24/7 Tech Tee LS Crew - Past Season Colour
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    Berghaus

    24/7 Tech Tee LS Crew - Past Season Colour

    Weighs
    150g
    Eco Initiatives:
    Bluesign
    Weighs:
    150g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    This technical tee has been designed to be an all-rounder. The soft, comfortable feel is backed up with high wicking, breathable qualities to give you a versatile top. Berghaus says Simple, classic t-shirts are always the best. Comfortable and elega…

    £24.99
    RRP: £34.99 | Save: £10.00
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  • 24/7 Tech Tee LS Crew Berghaus 24/7 Tech Tee LS Crew
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    Berghaus

    24/7 Tech Tee LS Crew

    Weighs
    150g
    Eco Initiatives:
    Bluesign
    Weighs:
    150g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    This technical tee has been designed to be an all-rounder. The soft, comfortable feel is backed up with high wicking, breathable qualities to give you a versatile top. Berghaus says Simple, classic t-shirts are always the best. Comfortable and elega…

    £29.99
    RRP: £34.99 | Save: £5.00
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  • 2025 Nava LS Zip Tee2025 Nava LS Zip Tee 2025 Nava LS Zip Tee
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    Mountain Equipment

    Nava LS Zip Tee

    Weighs
    152g
    Weighs:
    152g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Zip Neck

    We're working out what we think - we'll add our view here!  Mountain Equipment says:  Experience the ultimate in comfort and performance with the Nava Zip T. Its lightweight design and exceptional moisture-wicking capabilities make it perfe…

    £44.99
    RRP: £49.99 | Save: £5.00
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  • Berghaus 24/7 Tech Tee LS Half Zip - Past Season Colour Berghaus 24/7 Tech Tee LS Half Zip - Past Season Colour
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    Berghaus

    24/7 Tech Tee LS Half Zip - Past Season Colour

    Weighs
    158g
    Eco Initiatives:
    Bluesign
    Weighs:
    158g (Medium)
    Neck Style:
    Zip Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    This technical tee has been designed to be an all-rounder with the addition of the half length zip. The soft, comfortable feel is backed up with high wicking, breathable qualities to give you a versatile top. Berghaus says Simple, classic t-shirts a…

    £26.99
    RRP: £37.99 | Save: £11.00
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  • L/S Capilene Cool Daily Graphic T-Shirt L/S Capilene Cool Daily Graphic T-Shirt
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    Patagonia

    L/S Capilene Cool Daily Graphic T-Shirt

    Weighs
    158g
    Weighs:
    158g (size Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    A super soft and silky base layer providing comfort whatever your doing with Polygiene odour control to keep you feeling fresh. Patagonia says Soft, quick-drying and stretchy, our Capilene® Cool Daily is our most versatile performance knit for..…

    £54.99
    RRP: £59.99 | Save: £5.00
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  • 24/7 Tech Tee LS Half Zip 24/7 Tech Tee LS Half Zip
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    Berghaus

    24/7 Tech Tee LS Half Zip

    Weighs
    158g
    Eco Initiatives:
    Bluesign
    Weighs:
    158g (Medium)
    Neck Style:
    Zip Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    This technical tee has been designed to be an all-rounder with the addition of the half length zip. The soft, comfortable feel is backed up with high wicking, breathable qualities to give you a versatile top. Berghaus says Simple, classic t-shirts a…

    £32.99
    RRP: £37.99 | Save: £5.00
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  • Alpenglow LS Crew Alpenglow LS Crew
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    Black Diamond

    Alpenglow LS Crew

    Weighs
    162g
    Weighs:
    162g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    The Alpenglow is a technical fitting base layer that offers comfortable fit and protection from overheating with the BD.cool technology, making it perfect for climbing and other high activity sports.  Black Diamond says:  A technical fit pa…

    £54.99
    RRP: £59.99 | Save: £5.00
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  • Capilene Thermal Weight Crew Capilene Thermal Weight Crew
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    Patagonia

    Capilene Thermal Weight Crew

    Weighs
    172g
    Weighs:
    172g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Crew Neck

    Patagonia's warmest, most breathable Capilene baselayer is made with low-bulk Polartec Power Grid fabric with Polygiene permanent odor control and is Fair Trade Certified for sewing. Patagonia says:  When temperatures drop, grab this lightweight…

    £84.99
    RRP: £89.99 | Save: £5.00
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  • OMM Bearing Tee L/S OMM Bearing Tee L/S
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    OMM

    Bearing Tee L/S

    Weighs
    174g
    Weighs:
    174g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    The OMM Bearing Tee LS is a long sleeved, full coverage technical baselayer that is high wicking with UV protection. Great for training and every day use due to the high stretch and comfort. OMM says: The long sleeve Bearing tee uses our 4 way coolp…

    £29.99
    RRP: £34.99 | Save: £5.00
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  • Patagonia Capilene Midweight Crew Patagonia Capilene Midweight Crew
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    Patagonia

    Capilene Midweight Crew

    Weighs
    174g
    Weighs:
    174g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Athletic/Close Fit
    Baselayer Fabric:
    Synthetic

    The classic, go-anywhere all-around baselayer, made with 100% recycled content. The smooth, soft face makes for easy layering; hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ Fresh durable odor control keeps.…

    £69.99
    RRP: £79.99 | Save: £10.00
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  • Capilene Thermal Weight Zip Neck Patagonia Capilene Thermal Weight Zip Neck
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    Patagonia

    Capilene Thermal Weight Zip Neck

    Weighs
    175g
    Weighs:
    175g (size Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Zip Neck

    Warm, breathable, and packed with practical features, this baselayer is a top choice for cold-weather adventures. Patagonia says:  A breathable, lofted baselayer to keep you warm in cold conditions. Polartec® Power Grid® fabric with...

    £99.99
    RRP: £109.99 | Save: £10.00
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  • Turbat Hike Lite LS T-Shirt Turbat Hike Lite LS T-Shirt
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    Turbat

    Hike Lite LS T-Shirt

    Weighs
    180g
    Weighs:
    180g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Crew Neck

    We're working out what we think - we'll add our view here!  Turbat says:  The updated series of Hike thermal T-shirts with the lighter and more elastic material, provide better moisture removal and comfort during movement in the warm season…

    £29.99
    RRP: £34.99 | Save: £5.00
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  • OMM Core Hoodie OMM Core Hoodie
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    OMM

    Core+ Hoodie

    Weighs
    182g
    Weighs:
    182g (Medium)
    Insulation Level:
    Moderate Insulation
    Zip length:
    No Zip
    Hooded:
    Yes
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit

    UOG TOP PICK— OMM's Core+ Hoodie is a superlight base/midlayer using Primaloft ACTIVE 125g to reduce weight to a third that of conventional fleece products. A Top Pick OMM says A new concept in active insulation, the OMM Core Range is made enti…

    £104.99
    RRP: £109.99 | Save: £5.00
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  • Rab Conduit Crew Rab Conduit Crew
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    Rab

    Conduit Crew

    Weighs
    183g
    Weighs:
    183g (size Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Crew Neck

    A soft and light base-layer for the colder months, that can also double as a lightweight fleece the rest of the year. Rab says:  A thin, lightweight, crew made with 92% recycled fabric. This Thermic™ G baselayer excels in cold conditions..…

    £49.99
    RRP: £59.99 | Save: £10.00
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  • Alpenglow Hoody Alpenglow Hoody
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    Black Diamond

    Alpenglow Hoody

    Weighs
    189g
    Weighs:
    189g (Medium)
    Neck Style:
    Crew Neck
    Baselayer Fit:
    Regular Fit
    Baselayer Fabric:
    Synthetic

    The Alpenglow is a technical fitting base layer that offers comfortable fit and protection from overheating with the BD.cool technology, making it perfect for climbing and other high activity sports.  Black Diamond says:  A technical fit pa…

    £69.99
    RRP: £74.99 | Save: £5.00
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  • Redline LS Tee Redline LS Tee
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    Mountain Equipment

    Redline LS Tee

    Weighs
    191g
    Weighs:
    191g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Crew Neck

    The Mountain Equipment Redline LS Tee offers lightweight durability, moisture-wicking, and quick-drying capabilities that are ideal for layering. Mountain Equipment says:  This comfortable long sleeved tee can be worn alone on south facing rock.…

    £45.99
    RRP: £49.99 | Save: £4.00
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  • Patagonia Capilene Midweight Zip Neck Capilene Midweight Zip Neck
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    Patagonia

    Capilene Midweight Zip Neck

    Weighs
    196g
    Weighs:
    196g (Medium)
    Neck Style:
    Zip Neck
    Baselayer Fit:
    Athletic/Close Fit
    Baselayer Fabric:
    Synthetic

    Our classic, go-anywhere all-around baselayer, made with 100% recycled content. The smooth, soft face makes for easy layering; hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ Fresh durable odor control keeps.…

    £79.99
    RRP: £89.99 | Save: £10.00
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  • Selun FL Sun Hoody Selun FL Sun Hoody
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    Mammut

    Selun FL Sun Hoody

    Weighs
    200g
    Weighs:
    200g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Crew Neck

    If you know me, you’ll know how much I appreciate a sun hoody—they’re my go-to on any multi-day walk, and the Selun FL from Mammut earns a place in the rotation. Mammut says:  Your new go-to shirt for outdoor adventures, the Se…

    £64.99
    RRP: £74.99 | Save: £10.00
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  • Dart XT Zip Neck Dart XT Zip Neck
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    Montane

    Dart XT Zip Neck

    Weighs
    216g
    Weighs:
    216g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Zip Neck

    UOG TOP PICK - Dart XT Zip Neck A warm, well-fitting and incredibly soft and highly mobile baselayer for winter trail running and cooler weather hiking. It's one of our favourite winter baselayers and one of our top picks! Montane says:  High...

    £54.99
    RRP: £59.99 | Save: £5.00
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  • Cerrig LS Zip T Cerrig LS Zip T Cosmos
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    Mountain Equipment

    Cerrig LS Zip T

    Weighs
    220g
    Weighs:
    220g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit
    Neck Style:
    Zip Neck

    Quick-drying, breathable, and sustainably made, the Cerrig LS Zip T is a reliable base layer for adventurers tackling cold-weather challenges. Mountain Equipment says:  A winter-weight technical tee that efficiently wicks away moisture and dries…

    £49.99
    RRP: £54.99 | Save: £5.00
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  • Turbat Hike Lite LS Hood T-Shirt Turbat Hike Lite LS Hood T-Shirt
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    Turbat

    Hike Lite LS Hood T-Shirt

    Weighs
    224g
    Weighs:
    224g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Athletic/Close Fit

    We're working out what we think - we'll add our view here!  Turbat says:  Turbat Hike Lite LS Hood Mns is a men's T-shirt with long sleeves and a hood. Designed for summer activities when you are in the sun all day. Being synthetic, very...

    £34.99
    RRP: £39.99 | Save: £5.00
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  • Black Diamond Alpenglow Pro Hoody Black Diamond Alpenglow Pro Hoody
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    Black Diamond

    Alpenglow Pro Hoody

    Weighs
    267g
    Weighs:
    267g (Medium)
    Baselayer Fabric:
    Synthetic
    Baselayer Fit:
    Regular Fit
    Neck Style:
    Crew Neck

    UOG TOP PICK: Top Pick for Versatility: The Black Diamond Alpenglow Pro Hoody combines exceptional sun protection, durable weather resistance, and thoughtful features, making it an essential, year-round layer for multi-day adventures. Black Diamond..…

    £99.99
    RRP: £109.99 | Save: £10.00
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