Fits snugly and securely over almost any pair of work boots Rubber upper protects against spills Superior slip-resistant traction by Shoes For Crews Make any shoe slip resistant and water resistant. Prepare for unexpected messes and situations with our slip-on overshoes. The rubber upper protects your shoes from spills and splashes while our patented outsole helps keep you on your feet. Great for new hires, visitors or any employee not already wearing our top-rated footwear.