Customers who purchase two sets will receive a 200 yen discount on the two sets. Please specify the size. A winter essential. Outer shoe sizes: S: 21-23cm, M: 23-26cm, L: 26-29cm, XL: 29-32cm. For the portable type, please use with shoes or boots size M or larger. Convenient to carry during winter when roads suddenly freeze or snow accumulates. The 10 spikes provide a firm grip on snowy roads and icy surfaces. The portable type has 7 spikes. One size fits all. Made of TPE plastic that stretches and contracts down to -40 degrees. Do not be overconfident even when wearing spikes. Also, be sure to read the instructions. Due to postal service regulations, the blister pack will be removed before shipping.