Ultralight Cold Weather Base Layer Bottoms Built for Extreme Conditions The Brynje Super Thermo Longs with Inlay are high-performance mesh base layer bottoms engineered for extreme cold weather activity, expedition use, hunting, mountaineering, skiing, paddling, and demanding outdoor environments. Built with Brynje’s legendary Super Thermo mesh technology, these ultralight thermal bottoms deliver exceptional warmth, moisture management, breathability, and long-term durability without the bulk of traditional cold weather layers. Camping Gear X is proud to offer premium performance apparel from Brynje of Norway, trusted by polar expeditions, Special Forces units, rescue teams, and serious outdoor athletes operating in harsh environments worldwide. Designed for prolonged exposure to cold temperatures and intense physical activity, the Super Thermo Longs help regulate body temperature while keeping moisture away from the skin for superior comfort and performance. Why Brynje Super Thermo Mesh Works Brynje original Super Thermo (ST) mesh is constructed from 100% Schoeller® Polycolon® polypropylene yarn knitted into an open weave mesh structure. This advanced design provides: 4–6x greater insulating power by weight compared to traditional solid knit fabrics Outstanding breathability Exceptional moisture transport Rapid drying performance Lightweight thermal efficiency Unlike traditional thermal fabrics, the polypropylene yarn absorbs virtually no moisture, allowing perspiration vapor to pass through the garment instead of remaining trapped against the skin. Nothing wet against your skin. Built for Heavy Use & Severe Conditions The Super Thermo Longs are specifically designed for: Extreme cold weather activity High-output movement Long-duration outdoor exposure Heavy-duty expedition use The reinforced knee, thigh, and crotch panels improve durability and comfort during demanding activities and repetitive movement. Perfect for: Hunting Mountaineering Ski touring Winter backpacking Ice fishing Paddling under dry suits Wearing beneath waders Product Features Original Brynje Super Thermo mesh construction 100% Schoeller® Polycolon® polypropylene Reinforced knees, thighs, and crotch Lightweight thermal insulation Exceptional moisture management Fast drying performance Long-lasting durability Designed for extreme cold-weather activity Technical Specifications Material: 100% polypropylene Weight: 130 g Material Weight: 140 g/m² mesh Available Sizes SM MD LG XL Perfect For Winter backpacking Hunting Mountaineering Ski touring Ice climbing Paddling under dry suits Fishing waders Expedition travel Cold-weather endurance activity 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 where staying dry and warm is critical to both comfort and safety. Built for Serious Winter Performance Whether you're hunting in freezing temperatures, climbing alpine terrain, paddling in cold water environments, or enduring long winter expeditions, the Brynje Super Thermo Longs with Inlay provide lightweight thermal performance trusted by professionals around the globe. Warm. Breathable. Expedition-ready.
