The SmartPak Base Layer by PolarMax was designed with the athlete in mind! This shirt was anatomically engineered to provide high performance fit that moves with the body. Made from Acclimate Dry fabric, this 4-way stretch technical fabric is not only super comfortable but also stretchy, wicking, quick drying, anti-microbial and made in the USA. The versatile design and technical features of this base layer makes this the ideal performance top for riding or any other athletic endeavor! Favorites Features Body forming, no bulk fit High stretch for comfort in the saddle Comfortable flat seams are non-irritating Lightly lined with fleece for the ultimate next to skin comfort Scent Prevent Antimicrobial prevents any unwanted scents Made from 92% Acclimate Dry Polyester, 8% Lycra Pair with our SmartPak Ombre Knit Cap and the SmartPak Ombre Infinity Scarf Made in the USA Available Sizes: This shirt provides a compression feel so we recommend sizing up if a more relaxed fit is preferred. XS 0 S 2-4 M 6-8 L 0-12 XL 12-14SmartPak