I tried them on once to check the size. They are unused. S size (20-24cm) is also available. Bundling is possible, so please feel free to consult. - Suitable shoe size: approximately 23-28cm - Protects you from falls on icy roads. - Effective on icy surfaces. 10 pins per foot, 20 pins in total, provide a firm grip. - Simply hook them onto your toes and heels to put them on. Thank you.