Ultralight Cold Weather Base Layer Bottoms for Serious Winter Performance The Brynje Women’s Super Thermo Longs with Inlay are high-performance mesh base layer bottoms engineered for extreme cold weather activity, winter backpacking, mountaineering, skiing, hunting, and demanding outdoor conditions. Built using Brynje’s legendary Super Thermo mesh technology, these ultralight thermal bottoms provide exceptional warmth, moisture management, breathability, and durability while remaining remarkably lightweight and comfortable. Camping Gear X is proud to offer premium performance apparel from Brynje of Norway, trusted worldwide by polar expeditions, Special Forces units, mountain athletes, and serious outdoor adventurers operating in harsh winter environments. Designed specifically for women, these full-length thermal bottoms feature reinforced knees and a built-in panty for improved fit, comfort, and durability during extended outdoor use. Why Brynje Super Thermo Mesh Works Brynje original Super Thermo (ST) mesh is made from 100% Schoeller® Polycolon® polypropylene yarn knitted into a unique 3/8" open weave mesh structure. This advanced construction delivers: 4–6x greater insulating power by weight compared to traditional solid knit fabrics Exceptional breathability Superior moisture transport Rapid drying performance Lightweight thermal efficiency Unlike traditional thermal layers that absorb sweat and trap moisture against the skin, Brynje’s polypropylene mesh absorbs virtually no moisture, allowing perspiration vapor to move freely through the garment. Nothing wet against your skin. Built for Extreme Use The Women’s ST Longs are designed to withstand years of heavy outdoor use and perform exceptionally during: High-output winter activity Long cold-weather exposure Alpine travel Backcountry expeditions Hunting and winter hiking The reinforced knees improve durability in demanding terrain while the built-in panty design adds comfort and functionality for long days outdoors. Four-Season Versatility Although designed for cold-weather performance, the thermostatic properties of Brynje mesh also make these base layers highly effective during: Transitional seasons Cool weather hiking High-exertion activity Variable mountain conditions The mesh structure adapts to changing airflow and layering systems, helping regulate temperature across a wide range of conditions. Product Features Women-specific fit Original Brynje Super Thermo mesh construction 100% Schoeller® Polycolon® polypropylene Reinforced knees for durability Built-in panty design Exceptional moisture management Lightweight thermal insulation Fast drying performance Long-lasting durability Technical Specifications Material: 100% polypropylene Weight: 140 g Material Weight: 140 g/m² mesh Available Color Black Available Sizes SM MD LG Perfect For Winter backpacking Mountaineering Ski touring Hunting Winter hiking Snowshoeing Expedition travel Alpine layering systems Why Professionals Trust Brynje Brynje Super Thermo base layers are internationally respected for delivering: Exceptional warmth-to-weight performance Superior moisture control Reliable breathability Long-term durability Thermal regulation during intense activity These systems are widely used in environments where staying dry and warm directly impacts comfort and performance. Built for Winter Adventure Whether you're hiking through snow-covered trails, climbing into alpine terrain, or enduring long days in freezing temperatures, the Brynje Women’s Super Thermo Longs with Inlay deliver lightweight warmth and moisture control trusted by outdoor professionals and expedition teams around the world. Warm. Breathable. Expedition-ready. Brynje Size ChartUnisex Shirt Sizing Height Waist ChestXXS 4ft 9″ – 5ft 25″ – 27″ 32″ – 34″XS 5ft 1″ – 5ft 3″ 27″ – 29″ 34″ – 39″SM 5ft 4″ – 5ft 6″ 29″ – 31″ 37″ – 40″MD 5ft 7″ – 5ft 9″ 32″ – 34″ 40″ – 42″LG 5ft 10″ – 6ft 35″ – 38″ 42″ – 44″XL 6ft 1″ – 6ft 3″ 39″ – 42″ 45″ – 48″XXL 6ft 4″ – 6ft 6″ 43″ – 45″ 48″ – 50″3XL 6ft 7″ – 6ft 9″ 46″ – 50″ 51″ – 53″Women’s Shirt Sizing Height Waist ChestXS 4ft 9″ – 5ft 25″ – 27″ 28″ – 32″SM 5ft 1″ – 5ft 3″ 27″ – 29″ 33″ – 36″MD 5ft 4″ – 5ft 6″ 29″ – 31″ 37″ – 39″LG 5ft 7″ – 5ft 9″ 32″ – 34″ 40″ – 42″XL 5ft 10″ – 6ft 35″ – 37″ 42″ – 44″XXL 6ft 1″ – 6ft 3″ 38″ – 40″ 45″ – 48″Unisex Pants Sizing Height Waist InseamXXS 4ft 9″ – 5ft 25″ – 27″ 27″ – 28″XS 5ft 1″ – 5ft 3″ 27″ – 29″ 29″ – 30″SM 5ft 4″ – 5ft 6″ 29″ – 31″ 30″ – 31″MD 5ft 7″ – 5ft 9″ 32″ – 34″ 31″ – 33″LG 5ft 10″ – 6ft 35″ – 38″ 33″ – 35″XL 6ft 1″ – 6ft 3″ 39″ – 42″ 35″ – 36″XXL 6ft 4″ – 6ft 6″ 43″ – 45″ 36″ – 37″3XL 6ft 7″ – 6ft 9″ 46″ – 50″ 37″ – 38″Women’s Pants Sizing Height Waist InseamXS 4ft 9″ – 5ft 25″ – 27″ 27″ – 28″SM 5ft 1″ – 5ft 3″ 27″ – 29″ 29″ – 30″MD 5ft 4″ – 5ft 6″ 29″ – 31″ 30″ – 31″LG 5ft 7″ – 5ft 9″ 32″ – 34″ 31″ – 33″XL 5ft 10″ – 6ft 35″ – 37″ 33″ – 35″XXL 6ft 1″ – 6ft 3″ 38″ – 40″ 36″ – 37″Hat Sizing Circumference Actual Hat SizeSmall/Medium 54-56 cm 6 3/4 – 7 1/8Large/Extra-Large 56-59 cm 7 1/4 – 7 5/8Glove/Mitten Sizing Circumference of PalmSM 6.5″ – 7.5″MD 8″ – 8.5″LG 9″ – 10″ All sizes are averages and approximate. Your size may vary depending based on your body shape and the model. Mesh base layers are generally quite stretchy in all directions and are cut long. As the girth increases the length will decrease Generally the Women’s sizes will be one size smaller than Unisex. I.E. a Unisex SM is equivalent to a Women’s MD. Laundry InstructionsWool is a natural fiber which does not to be laundered regularly. A global wardrobe survey in 2015 by AC Nielsen confirmed that wool garments have a longer life than cotton – as much as 50% longer. Merino wool can be worn multiple time between washings which will prolong the garment life and protect the environment. The synthetic fibers like Schoeller® Polycolon can be machine washed and hung to dry.Hand wash or machine wash on gentle cycle with cool water (not to exceed 85°F).Line dry. Do not tumble dry.Do not use bleach.Do not use fabric softener.Do not dry clean.
