Feel safe this winter: Get a good grip on winter roads with these sturdy crampons. These anti-slip devices for shoes have 18 super-effective steel teeth/studs for a perfect grip on winter surfaces like ice and snow. Easy to attach and remove: Attached with strap/chain mechanism. Works just as well for walking as for running. The crampons are very easy to put on and just as easy to take off. A reliable anti-slip device you can trust so you can feel secure! Specifications: Material: Silicone and stainless steel Size: L (fits shoe size 39-44) Package includes: 1 pair of crampons Size chart: Tip: If you are going to use these crampons on very sturdy, 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_CA