Water Helmet - S/M - White This helmet is for lightweight and comfortable protection. The Rachet system and chin cup provide a secure fit, and the helmet can be fitted with flashlight or motion camera adapters.Features: Hi-impact ABS shell Accessory side rails and NVG/Go Pro mounting bracket 9 ventilation vents Closed-cell EVA-molded foam liner for comfort and safety Ratchet easy-fit system The chin cup webbed strap adjusts to fit Removable foam ear protection pads CE EN 1385 Approved Specifications: Color: White Size: S/M Head Circumference (in.): 21"-22.5" .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }