Experience unbeatable warmth and flexibility with the Arc’teryx Rho AR thermal pants. Designed specifically for men, these winter base layer pants feature Polartec® Power Stretch® Pro fabric, providing exceptional stretch and a snug fit that moves with you.
The durable nylon exterior ensures a smooth layering experience, while the soft, brushed interior efficiently wicks moisture, keeping you comfortable during active winter days. With a trim fit that retains heat close to your body, it’s easy to layer these pants under your mid and outer layers for added warmth.
- Thigh pocket with a laminated zipper for smartphones and essentials
- Available inseam lengths: 32 inches (S), 32.5 inches (M), 33 inches (L–XXL)
- Meets bluesign® criteria for sustainability
Whether you’re skiing, hiking, or enjoying any winter sport, the Rho AR thermal pants are the best men’s heavyweight base layer for winter.
Curtis Simon (verified owner) –
I’ve used the Arc’teryx Rho AR thermal pants for skiing, and they keep me warm without feeling bulky. Definitely the best men’s heavyweight base layer for winter!
Cheryl Foster (verified owner) –
These thermal underwear for men are fantastic! They fit perfectly and keep me dry and comfortable during cold weather hikes.
Michelle Mejia (verified owner) –
I love the stretchiness of these pants. The Polartec Power Stretch fabric makes a noticeable difference, allowing for full range of movement.