Baselayer

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…

Mammut Aenergy FL T-Shirt combines exceptional lightness, advanced functionality, and sustainability. Strategically placed mesh ventilation zones promote breathability and moisture management. HeiQ Fresh controls odour even during extended use, makin…

A simple but efficient pair of long johns that balance warmth, breathability and comfort for winter layering. Fjallraven says:  Light, soft and warm long johns made from 100% traceable merino wool. Produced without PFAS. Stay in tune with nature…

A merino long sleeve that balances insulation with breathability for winter layering. Fjallraven says:  Light, soft and warm long-sleeved base-layer top made from 100% traceable merino wool. Produced without PFAS. Stay in tune with nature in thi…

Patagonia's Capilene Theramal Weight Bottoms are warm, breathable polyester baselayers with minimal bulk. Polartec Power Grid fabric with Polygiene permanent odor control. Fair Trade Certified sewn. Patagonia says Soft, stretchy, breathable and...

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 Montane Dart Nano T-Shirt is lightweight, durable, and moisture-wicking, making it an ideal warm-weather active layer. Montane says:  Our pinnacle technical T-Shirt. 30% lighter than our highly regarded Dart with improved moisture management…

Dart Nano Zip T-Shirt is a fully recycled Synthetic technical T-Shirt/base layer that offers a highly breathable and odour-resistant layer.  Montane says:  The Dart Nano Zip T-Shirt is a classic, all-season, all-mountain technical baselayer…

A warm, well-fitting and incredibly soft and highly mobile baselayer for winter trail running and cooler weather hiking. Montane says:  High performance thermal long sleeve zip neck baselayer. The ultimate high-alpine or expedition baselayer...

A breathable technical tee that handles warm-weather activity without fuss. Berghaus says:  Meet the ideal technical tee for comfort when activity levels and temperatures are high. Polartec® Delta works hard next to your skin – wicking…

The Outdoor Research Echo Hoodie is an ultralight, multi-season staple, perfect for everything from summer hikes to winter layering. Outdoor Research says:  The Echo Hoodie is built from bluesign®-approved and recycled materials and is perfe…

We're working out what we think - we'll add our view here!  Mammut says:  The ideal base layer for next-to-skin comfort during intense winter climbing. Tested by athletes as part of our Eiger Nordwand range, these tights are engineered with…

BG TOP PICK: Ultralight, fast-drying, and highly breathable, the Mammut Eiger Nordwand FL Air Mesh Vest delivers efficient warmth with minimal bulk — a top choice for high-output alpine missions. Mammut says:  A successful expedition star…

BG TOP PICK: Light, tough, and highly breathable, the Mammut Eiger Nordwand FL Longsleeve wicks fast, resists odour, and endures pack wear — a top choice for demanding, high-output days in the mountains. Mammut says:  For everything from..…

BG TOP PICK:  Light, durable, and naturally comfortable, the Montane Malli Leggings blend Merino performance with synthetic strength — a top choice for mountain layering and multi-day use. Montane says:  Utilising Nylon core spun...

BG TOP PICK: Soft, durable, and naturally breathable, the Montane Malli Long Sleeve T-Shirt combines Merino comfort with synthetic strength — a top choice for mountain layering and multi-day wear. Montane says:  Utilising Nylon core spun..…

BG TOP PICK: Lightweight, versatile, and naturally odour-resistant, the Montane Malli Long Sleeve Zip T-Shirt blends Merino comfort with synthetic durability — a top choice for adaptable mountain layering. Montane says:  Utilising Nylon co…

Simple, breathable and made to move,  a dependable tee for fast or slow miles. Rab says:  From post-work wanders to multi-day epics, the Mantle Ridge Tee is a versatile technical baselayer for any adventure outdoors. Constructed from fully.…

A technical tee with a casual style created from a recycled heather jersey fabric. Quick drying fabric and low bulk seams provide all day comfort with a soft next-to-skin feel and a Polygiene finish. Rab says:  A technical tee with a casual styl…

Lightweight warmth and flexibility for cold-weather pursuits. Rab says:  Made with exceptionally warm, fast-drying Thermic™ Stretch Pro fabric, these lightweight fleece tights offer a boost of warmth and comfort as a baselayer in cold...

A strong choice as a year-round base layer or standalone in warmer temps, especially for those prioritising breathability and low bulk. Mountain Equipment says:  A lightweight and quick-drying, long-sleeved Zip-T for running and hiking in the...

Lightweight Baselayer that utilises the incredible properties of Merino wool to insulate and regulate your body. Rab says:  Lightweight, long sleeve, slim fit baselayer made with Syncrino™ 125 fabric. Benefitting from both warm, wicking me…

The Mammut Tree Wool FL Longsleeve blends merino wool and Lyocell for comfort, warmth, and breathability. It's lightweight at 176 grams (medium), dries faster than traditional wool, and has temperature regulation and odor-neutralizing properties. Mam…