Salisbury 51559 12 Dielectric Two Buckle Overshoes Yellow/Black Size 12ASTM F2413 EH Deep Heel Overshoes provide extra safety when climbing ladders and poles where the deep heel cavity can lock onto the rungs. These dielectric overshoes are made from an ozone resistant yellow rubber thats 100% waterproof. The construction is hand layered in full cut patterns to fit over work boots. The fabric lining makes them easy to get on and off. The sole is an anti skid bar tread. The outsole of these deep heel have been lot tested