Pro Lite Rib ProtectorRIB VEST SIZE CHART SIZE MEASURE AROUND THE CHEST AT LARGEST POINT (IN.) 4XS 26 29 3XS 27 31 2XS 29 32 XS 30 33 S 34 38 M 38 40 L 40 42 XL 42 48 2XL 48 52 The new Pro Lite rib vest features a lightweight foam mesh inner lining for extreme comfort with an integrated hydro foam outer rib barrier for ultimate protection. Velcro front elastic closure for flexibility Adjustable shoulder straps