3CERA&reg; Ice Traction Universal Slip-on Stretch fit Snow Ice Spikes Rubber Spikes Grips Cleats 10-Stud Crampons M,L The material is flexible to -40c The special non-slip studs offer excellent traction on ice and snow. Size: M (130X 207mm, 36-41); L (133X155mm,39-46) M: US WOMEN:7-10 US MEN:5-8 EUR:38-42, UK: 4-7 JP:23.5-26CM L: US WOMEN:10-13 US MEN:8-11 EUR:42-45, UK: 6-11 JP:26-29CM Package include: 1pc