Item: LINXGR Kid Crampons Material: Rubber + Manganese Steel Spikes + Steel Chain Please refer to our size guide before order:Size Chart: Size: Small: Fits Boot Size US: 8M Toddler - 12.5W Little Kid (EUR 24-30.5), Size: Medium: Fits Boot Size 12.5M Little Kid- 4.5W Big Kid (EUR 30.5-37), Size: Large: Fits Boot Size 4.5M Big Kid - US Men’s 9/Women's 10.5 (EUR 37-42). (We will suggest add 1 size up to order larger when daily shoes size is closed to our Max reference size about 1-1.5 size.) Package Includes: 1 pair LINXGR Kid Crampons, 1 portable storage bag. Features: Double-breasted design and chain welding to ensure firmness. Super-tough rubber has outstanding elasticity to better fit boots. Crampons spikes cutted from steel plate to ensure durability and good grip. Reduce the risk of injury from slips and falls when walk on ice, snow, mud and wet grass or other poor conditions. Easy to put on/take off. Portable, light weight, can be carried in a small storage bag. Widely fit for various kinds of sports shoes, hiking shoes, mountaineering shoes and boots. Perfect for a variety of outdoor scenes, such as hiking and mountaineering, ice and snow, city roads and mud roads. Note: Storage method: Blow dry after use and save. Suitable for amateur outdoor mountaineering, walking on snow ice, NOT professional rock climbing equipment. Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!