Portal Chell Double Layer Tank (Medium) 96% Cotton, 4% Spandex Machine Washable; Easy Care Fabric will stretch about 2-3 inches Length: XS - 30-31, S - 31-32", M - 32-33", L-33-34", XL-34-35", 2XL-35-36" Waist: XS - 12.5", S - 13.25", M - 14.25", L-15.25", XL-16.25", 2XL-17.25"