Layer up for a cold day on the mountain. Stay warm at base camp. The men's Burton [ak] Helium Stretch Insulated Pants are that extra layer that makes a difference on the coldest days. Stretchy and breathable, they're made for wearing under your shell pants or bibs, but they're so comfortable you'll prob wear them for a lot more things, too.

Additional Features

Stretch Fabrication

Stretch Binding at Cuffs

Elasticized Waistband with Internal Draw String Cinch

Reflective Details

Ultimate combination of high CFM super stretch fabric and stretch insulation for high output activity

YKK® Zippers