10 button hole wrap over fastening. High quality, long-life, resin buttons. Unisex sizing. Size Chest (to fit) XS - 33” S - 36” M - 39” L - 42” XL - 45” XXL - 48” 3XL - 52”. Fabric 65% Polyester, 35% Cotton Twill. Weight 245gsm Ref: UTRW1121