100% Acclimate * Contrast stitch, Lightweight rib knit with flat seam construction/Relaxed Fit/Ideal layering piece or wear it alone. * Acclimate Dry, Wicks, Breathes, Quick Drying, No Stink-Anti-microbial/anti-odor protection, No Chafe-Flat seam construction for ultimate comfort. * Machine Wash and Dry, NO Shrinking * 100% Made in the USA