Great for Skiing, Hiking, Climbing, Fishing- ALL WINTER SPORTS or if you just want to be warm. Feels like Cotton / Mid-Weight with flat seam construction for ultimate comfort. Contrast Stitching. 100% Acclimate Dry Polyester. Moisture Wicking, Breathable, Quick Drying lightweight rib knit with flat seam construction. Anti-microbial/anti-odor protection. Relaxed Fit. Machine Wash and Dry. 100% Made in the USA.