What Our Gearhead(R) Experts Are Saying:"I wore the Summit Pro Baselayer Crew Top on a cold alpine start and never felt clammy even once I started sweating on the approach. The thumb loops kept my sleeves in place under my shell all day, which made layering effortless."Cold weather objectives live or die on what's closest to your skin, and the Summit Pro Baselayer Crew Top from The North Face was built with that in mind. Picture a predawn start on a winter summit push, temperatures still dropping, layers going on one by one, and a base layer doing the quiet work of keeping you dry underneath it all. DOTKNIT fabric pulls moisture away from the body before it has a chance to chill you, while wool content built into the blend helps manage odor through long days on route. Flat-locked seams and underarm gussets keep the fit low profile and full range of motion intact, and internal thumb loops lock the cuffs in place so sleeves stay put under a shell no matter how many layers stack on top.