We will give you a 200 yen discount if you purchase two sets, so please comment with your size. The displayed sizes are the outer dimensions of the shoes and boots. Please check the size before purchasing. S size is 21-23cm. M size is 23-26cm. L size is 26-29cm. XL size is 29-32cm. The portable size is for those with a size of 23cm or more. It also varies depending on the shape of the footwear. Do not be overconfident even when wearing them. The material used is TPE plastic. The pins use an alloy. To reduce shipping costs, we are sending them without the blister pack.