This is a soft, 15mm thick, Japanese-made heel supporter. It contains rubber sponge to cushion the impact on the heel when stepping in Kendo, making it effective for those who can't step properly due to heel pain, and also for preventing heel pain. Available sizes: M, L, and LL. Size Guide: Shoe size 24cm or less: M Shoe size 24-26cm: L Shoe size 26cm or more: LL Since it fits snugly, those with high insteps or wide feet should choose one size larger. We have plenty of stock in each size, so you can buy immediately. Please specify your size after purchase. Besides Kendo, it can also be used to alleviate pain from plantar fasciitis, etc. Shipping will be via standard mail, so it will take 3-5 days for delivery. Furthermore, standard mail does not deliver on weekends and holidays, so delivery will be further delayed if weekends or holidays are involved. Thank you for your understanding. For those who need it urgently, you can change to Letter Pack shipping for an additional 600 yen. Please inquire in the comments. No price reduction is possible.