Outer Shell Construction: In - Mould Inner Shell: Shock absorbing polystyrene Chin Strap Buckle: Anti - pinch buckle Straps And Divider: Anti - slip cam divider Fit System: Safe - T Orbital Comfort: Anti - Allergenic Interior Padding. Hand Washable Be Seen: Rear reflective sticker. Compatibility: USB Led Light Accessories: Fixed Goggle Clip, Mips Certifications: CE, AS/NZ, US Weight: Small 340g / Medium 360g / Large 395g Size: S 52/56cm. M 56/58cm. L 58/62cm.