What Our Gearhead(R) Experts Are Saying:"I wore this under my shell for a first chair kind of day when the temperature hadn't climbed above freezing yet. The napped back kept me warm on the lift, and the thumb loops kept my sleeves from riding up run after run."First chair on a cold morning means standing around in the lift line before the sun has done any real work, and the Micro Elite Chamois Crew Top from Hot Chillys has been the layer for exactly that moment for decades. A body-fitting silhouette sits close to the skin under a shell, smooth on the outside for easy layering and napped on the inside for extra warmth against the chill. Four-way stretch keeps the fit moving through every turn, while flat seam construction set away from the shoulders avoids any rubbing under pack straps or shell seams. Thumb loops keep sleeves in place through the whole run, making this the base layer that quietly does its job from the first chair to the last.