High-quality SIDAS XS size insoles provide a comfortable fit. - Brand: SIDAS - Original Size: XS (22.0cm - 23.0cm) - Current Size: Cut to approximately 22.0cm - Type: Winter Insoles - Slightly dirty, but no issues with use - Used for 1 season (approx. 3 months) Used as insoles for ski boots. Even pressure distribution eliminated foot problems. For those who have never used insoles, please give them a try. Can also be used for sports other than skiing. They have silver ion foam on the sole, making them winter-specific, but they do not generate heat, so I believe they can be used in any season. This is a personal opinion, so please consider it as a reference. ★SIDAS winter sports insoles! ★Firm fit for improved control. Draw ideal turns! ★Thinly designed toe for more sensitive ski control! ★Transflux C, excellent for support and rebound, used from heel to arch! ★Features antibacterial ion foam with silver ions. ★Toe thickness: 4.0mm No.211122