If you purchase two sets, you will receive a 200 yen discount. Please specify the size. These are essential items for winter. 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. It's convenient to carry these during the 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. It's a free size. Made of TPE plastic that stretches and contracts down to -40 degrees. Do not be overconfident even when wearing spikes. Please be sure to read the instructions. Due to postal regulations, the blister pack will be removed before shipping.