Adjustable length fit for shoes: US 6-13.5 / CN 36-46. High duty manganese steel spikes, strong, tough and corrosion resistant. 12 spikes, 1.5in long, can dig into varieties terrain, firm and safe. TPU straps is highly flexible and won't snap. Nylon binding fits for most shoes and boots. Nice ice gripper for snow climbing, ski mountaineering, glacier hiking and etc. Material: Manganese steel + TPU Fit for shoes: CN 36-46 / US 6-13.5 Spike length: 4cm / 1.5in Color: As Shown Package Contents: 2 Pair * Ice Gripper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.