Feel safe during winter: Get a good grip on winter roads with these robust crampons. These anti-slip devices for shoes have 18 super-effective steel teeth/studs for a perfect grip on winter surfaces such as ice and snow. Easy to put on and take off: Attached with a strap/chain mechanism. Works just as well when walking as when running. The crampons are very easy to put on and just as easy to take off. A good anti-slip device to rely on so you can feel safe! Specifications: Material: Silicone and stainless steel Size: L (fits shoe size 39-44) Package includes: 1 pair of crampons Size guide: Tip: If you are going to use these crampons on very heavy, rough boots, we recommend choosing one size larger. S: Shoe size 31 - 35 M: Shoe size 35 - 39 L: Shoe size 39 - 44 XL: Shoe size 44 - 48 Feel safe with a good grip With 18 effective studs/steel teeth Easy to put on and take off