Color: Black, White, Gray Size: Med & Large 95% Cotton, 5% Polyester Machine Wash HIGH QUALITY FABRIC -- These muscle stringer tank tops are made of 95% cotton and 5% polyester. Lightweight and soft material will keep you cool at the gym all day. FASHION Y-BACK DESIGN -- Y-Back tank has a straight bottom edge and is sometimes referred to a T-Back or Racerback. Common style tanktop for weight-lifting, cardio, cross-fit, running and more. FITNESS STYLE -- Large cut arm holes release more space for your strong and muscular body and allows your arms to move more easily. SUITABLE OCCASIONS -- Perfect for gym, physical fitness, weight-training, workout, bodybuilding, running, etc. Looks cool and handsome in daily wear and outdoors. SIZE INFORMATION -- M:Chest:38-40" These stinger tank tops seem to run a little loose. We suggest choosing one size down for a more conforming fit if desired.