This is a mont-bell water sports helmet. I used it once for a stream climb, so it has some scratches, but it's almost like new. The size is M (56-58cm). *Only one size, M, is available. - Brand: mont-bell - Manufacturer's suggested retail price (including tax): 6,160 yen - Size: M (M size only) - Color: Light Blue - Design: Climbing helmet - Ventilation holes: Multiple ventilation holes - Features: Lightweight design [Product introduction from the mont-bell official website] Thank you for viewing.