These are detachable anti-slip spikes that attach to your shoes. Sizes are shown in photos 6, 7, and 8. They can be used on icy roads, as well as for mountain climbing and leisure activities. They have excellent grip and are easy to attach. They are more compact than carrying snow boots and are recommended. This item sells for 12,049 yen on Amazon! I am selling these because I no longer need them. Perfect for those planning to travel to snowy areas or for preventing falls in the elderly! *When shipping, I will remove the item from the box, fold it, and wrap it with bubble wrap along with the product.