When walking on slippery ice and snow, what's under your feet can make all the difference. The Boyz Toyz Shoe Grips will fit most types of footwear, with metal studs to penetrate frosty ground and help to prevent you from slipping. Shoe grips for ice and snow. Strong and durable rubber. Metal Studs. Extra-Large size fits UK shoe sizes 11-13. Compatible with most types of footwear.