DescriptionMetal studs into a premium silicone band, more flexible with good elasticity. Suitable for different shoe size and fit most foot wear: sneakers, boots, casual and dress shoes. Durable, portable, lightweight, so can put it in a small storage bag. Easily fitted over existing footwear with no buckles or straps.Features- Color: Black. - Material: Silicone and metal. - Size L: Diameter 19cm. Suitable for size 38-46. - Size S: Diameter 17.5cm. Suitable for size 30-38. - Metal studs into a premium silicone band, more flexible with good elasticity. - Suitable for different shoe size and fit most foot wear: sneakers, boots, casual and dress shoes. - Durable, portable, lightweight, so can put it in a small storage bag. - Easily fitted over existing footwear with no buckles or straps. - It contains 5 studs, can easily grip ground well, will be the great gifts for our parents and kids in the winter.