Anon ski and snowboard helmet. Size: M (56-59cm) Used by a child. (Purchased in January 2022, used about 5 times in one season.) Used with an inner cap. Please check the product condition in the photos. There is a mark on the back right side from a ski pole. *Price negotiation is not possible. The Anon Echo Helmet features the BOA® 360° Fit System, which allows for easy and quick fine-tuning with a simple dial. It has an injection-molded shell construction, providing a clean, compact fit and a lightweight feel. Goggle ventilation channels draw in fresh air to prevent fogging. It also features active ventilation with 15 vents that can be operated with one hand, allowing you to control the internal environment depending on the situation.