Baselayer - Long Sleeves

Breathable, featherlight, and built for movement in the height of summer. Montbell says: Made of the lightest knit t-shirt fabric in Montbell's lineup and designed for intense workouts, high-output days on the trail, or activities during the hottest.…

We're working out what we think - we'll add our view here!  Patagonia says:  Our most versatile technical top is built for use on the trail or on the water: It’s quick drying, has stretch for mobility and comfort, plus HeiQ® Mint …

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…

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...

We're working out what we think - we'll add our view here!  Patagonia says:  An all-around tech tee made to wick moisture and stretch as you move, with silky fabric that feels cool even when the air is hot. With HeiQ® Mint odor control …

We're working out what we think - we'll add our view here!  Patagonia says:  Our most versatile technical top is designed for use on the trail or on the water: It’s quick drying, has stretch for mobility and comfort, and HeiQ® Min…

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…

We're working out what we think - we'll add our view here!  Patagonia says:  Artist Vernan Kee created our Cloud Crag graphic, which shows the Fitz Roy massif from the clouds. We screen-printed the artwork on our Men's Long-Sleeved...

We're working out what we think - we'll add our view here!  Patagonia says:  Our most sun-protective tech tee offers 40+ UPF coverage with wicking and fast-drying performance. Single-knit construction generates a naturally sun-protective ef…

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…

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…

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…

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.…

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..…