Physical training PT performance T-Shirt, made from 100% polyester neoteric wicking fabric for climate control. 100% polyester neoteric fabric to help keep you cool and offer UV protection of UPF 30+. Specification Neoteric„¢ textured fabric with inherent wickability UPF 30+ UV protection Self fabric crew neck Self fabric taped neck Twin needle stitching 100% polyester To fit chest Sizes: Small 38" Medium 40" Large 43" Extra Large 45" Extra Extra Large 48" The Ciphers on the front are from antecedent regiments.