SWANS MIPS IVO Ski and Snowboard Helmet for Size M with Size Adjustment and Fits Men and Sizes Adults, HSF-241, (53cm-57cm), Ivory, Lightweight,

Mips multi-directional impact protection system The Mips sheet inside the helmet moves 10-15mm in all directions, dispersing impacts to the head from multiple directions and reducing brain damage. Lightweight, feature-rich, high-performance model Available in two sizes: M size (53cm-57cm) 450g, L size (58cm-61cm) 470g The dial on the back of the head allows you to fine-tune the head circumference to suit your head size. The open/close ventilation allows you to adjust the temperature inside the helmet according to the weather.