When the mountain calls for an extra layer, this answers. The men's Burton Midweight X Base Layer Crew will keep your personal climate under control, with quick-drying, highly breathable fabric. Four-way stretch fabric will have you at peak flexibility.
The Sabre in Dark Shadow/Phantom is an ultra heavy duty skate style with a slip on sock construction for comfort and stability featuring step-in sock liner, Nitrocel™ airbag sole and Globe's S-Trac™ sole pattern.
Sherpa Half Zip might be your new best friend, as far as layers go. Comfortable as a low-key everyday style, but built with enough tech to crush as a functional mid layer when the mountain environment calls for it.