This is a mask used in Inti Raymi (Festival of the Sun) in Cusco, Peru, one of the three major festivals in South America. It's a hand-knitted balaclava, so it's stretchy. The size is unisex. How about it for trail running, jogging, or walking in the coming cold season? It's also perfect for those who like unusual gifts, such as for Christmas! Size: Width: Approximately 21cm Length: Approximately 35cm Hand washing is recommended. If using a washing machine, please use a laundry net and the hand wash mode. Since it is made in Peru, there is a possibility of color bleeding in the first wash, so please wash it separately from white items.