Protect your bowling shoes by slipping a pair of these covers over them when you are leaving the lane. They are made of high quality vinyl with an elastic top to keep water, mud and dirt off your shoes. DEXTER SHOE COVER SIZE GUIDE Small- Ladies: 5 to 9 and Mens: 6 1/2 to 9 1/2, Medium- Ladies: 10 to 12 and Mens 9 to 11, Large- Mens 11 1/2 to 15 TWO Dexter Shoe Covers in 1 pack.