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Keeping warm while moving can be tricky. Too much insulation and you’ll sweat on the climb; too little and a cold wind can quickly chill you at the ridge. Polartec Alpha Direct, PrimaLoft ACTIVE, and Octa take a particularly effective approach: lightweight, open constructions that trap warm air while letting heat and moisture escape. Paired with the right outer layer, they offer exceptional …

This guide focuses on ultralight synthetic insulated jackets for hiking, backpacking, and mountaineering. We’ll break down the types of synthetic insulation available, how to judge a jacket’s warmth, what features to look for, how synthetic compares to down, and tips on care and maintenance. By understanding these factors, you can choose the best ultralight synthetic jacket to keep you …

There are basically three types of synthetic insulation used in outdoor jackets: 1. Sheet Insulation – Fibres are woven into a ‘mat’ structure and this is used to fill the jacket, this is the ‘traditional’ way of doing this and provides excellent warmth to weight and is pretty durable. 2. Loose Fill Insulation – This is where synthetic fibr …

Rab’s latest range of winter jackets look to be creating a lot of interest, with the Generator Alpine showing early signs that this could be a cold weather jacket specifically with British winter conditions in mind. “Built for exposed climbs and formidable winter weather, the new Generator Alpine …

Primaloft Hybrid Down Blend

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On first appearance the Icarus Stretch has the look of a regular micro insulated hooded jacket with a stylish build up of diagonal panels. However, it didn’t take long to see the key addition of stretch panels along the jacket sides and under the arms, giving this jacket an extra dimension. This allowed us to trial it across a range of mountaineering disciplines including high mountain walking, cr …

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Primaloft Silver Performance Yarn Merino Wool Blend Quick Drying: Features an accelerated dry rate for comfort on the go, and a shorter dry time out of the laundryMoisture Management: Effectively moves moisture away from your body and dries fasterLightweight: All the warmth you need with maximum freedom of movementSoftness: Enjoy superior softness that feels great on your body and contributes to …

Primaloft Gold Active Insulation Breathable: Encourages the passage of air and moisture to keep you from feeling cold and clammy4-Way Stretch: Engineered with 4-way stretch with complete recovery for uncompromised freedom of movementPackable: Packs down easily for stashing in small places and layeringAll the warmth you need with very little weightSoftness: Enjoy superior softness that feels great …

Primaloft Gold Insulation Breathable: Encourages the passage of air and moisture to keep you from feeling cold and clammyPackable: Packs down easily for stashing in small places and layeringAll the warmth you need with very little weightSoftness: Enjoy superior softness that feels great on your body and contributes to a flattering fitWarmth without Bulk: A high warmth to weight ratio means you do …

Primaloft Gold Insulation Down Blend Breathable: Encourages the passage of air and moisture to keep you from feeling cold and clammyPackable: Packs down easily for stashing in small places and layeringLightweight: All the warmth you need with little weightSoftness: Enjoy superior softness that feels great on your body and contributes to a flattering fitWarm: Mimics the warmth of downWater Resista …