About this product
When the mountain demands more, the Men's Mountain Weight Bottom delivers. Brushed two-sided fleece provides exceptional insulation — the interior locks heat next to the skin while the exterior layers smoothly under a shell or jacket without bulk.
Advanced moisture-wicking actively pulls sweat away from the skin to keep you dry and comfortable through variable-intensity efforts, while flat-seam construction eliminates chafing under pack straps, harnesses, or outer layers — a detail that matters on long days in the alpine.
Built for skiing, snowboarding, mountaineering, and extended cold-weather adventures, this is the base layer you reach for when conditions get serious.
Key features:
- Mountain-weight brushed two-sided fleece for superior insulation
- Mechanical stretch for shape retention
- Advanced moisture-wicking for temperature regulation
- Flat-seam construction to minimize chafing under packs or harnesses
- Durable construction
- Ideal for skiing, snowboarding, mountaineering, and extended cold-weather adventures
Description supplied by Polarmax through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






