The PolarMax Montana Wool Crew is as functional as it is stylish. Crafted from 100% Merino Wool from Sheep raised in America, the Montana Wool Crew is 100% made in the USA. The Montana Wool Crew is not only for outdoor adventures, but is a great additional to your daily wear collection. 100% Merino Wool, Slim, Athletic Fit, Acclimate Dry Moisture Management, Superior Moisture-Wicking, Ideal Temps Below 60 Degrees, Fit: Tight, Material: Wool, Weight: Light, Type: Top, Recommended Use: Hiking/Camping, Antimicrobial: Yes, Anti Odor: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2020, Product ID: 566437, Model Number: 1W31N 023 XS, GTIN: 0785146575345