Material: 100% polyester. Hook and loop fastener in the front. 5cm width reflective tape around the body and over each shoulder. Suitable for screen printing and transfer. Size S: EN ISO 20471:2013 Class 1. Sizes M-5XL: EN ISO 20471:2013 Class 2. Size (chest to fit): (S) 36-38in, (M) 40-42in, (L) 44-46in, (XL) 48-50in, (XXL) 52-54in, (3XL) 56-58in, (4XL) 60-62in, (5XL) 64-66in. Ref: UTBC4610