Patagonia Capilene Thermal Weight Boot Length Bottoms (Men's)
Built for cold missions where staying warm without overheating matters, the Capilene® Thermal Weight Boot-Length Bottoms use Polartec® Power Grid® fabric to strike the right balance of loft, breathability, and moisture control. The smooth outer face makes for easy layering under shells, while the open-grid fleece interior traps warmth and wicks sweat away when you’re moving hard. A touch of spandex gives these baselayers reliable stretch and freedom to move.
The 22" boot-length cut sits above ski and mountaineering boots, eliminating bulk and bunching. Flatlock seams reduce chafe, a gusseted crotch adds mobility, and the brushed elastic waistband feels soft against the skin. HeiQ® Pure odor control helps keep things fresh over multi-day trips, and the bottoms are Fair Trade Certified™ sewn, meaning the people who made them earned a premium for their work.
The Bottom Line: A lightweight, breathable, and warm baselayer for skiing, climbing, or cold-weather layering. Ideal for anyone who needs warmth under technical shells without the hassle of fabric stacking in boots.
Size Chart

Returns and Exchanges
We accept returns on eligible items within 15 days of delivery, provided the product is in like-new condition.
Footwear may be tried indoors only (home or treadmill). All returned items must be unworn beyond fit testing, include original manufacturer packaging and hang tags (fees may apply if damaged) and have been purchased from SkiUphill-RunUphill within the 15-day window. Apparel must be completely unworn.
Final Sale / Non-Returnable Items
All sale items are final sale. The following items are not eligible for return: carbon-plated running shoes, avalanche safety equipment (transceivers, shovels, probes, airbags), climbing equipment (ropes, harnesses, carabiners, belay devices, slings), ski crampons, helmets and gift cards.
Return Process & Fees
International returns are not accepted. A 10% deduction applies to all refunds to cover credit card processing and administrative fees.
For more information on returns and exchanges, click here.