HS-405 Maximum Protection ; Lightweight ; High Strength Polypropylene Straps ; Quick Release Buckles ; Snell RS-98 Certified ; CE and CPSC Standards ; Size :S/M;L/XL CM :56~60cm,60~64cm ; INCHES :22~23.5,23.5~~25 ; Color :Black Blue Red White Yellow ;Vent:16 ;