SOL'S TUNER, UNISEX T-SHIRT, Neck tape, Ribbed round neck, Short sleeves, Cut and sewn, Comfortable fit, 100% USA combed ringspun cotton, *346 Light grey melange : 93 % cotton / 7 % viscose, *348 Charcoal melange : 60 % cotton / 40 % polyester. About sizes matching, please refer to the size chart in the product documentation section.