Black Widow Shoe Covers Protect your bowling shoes when leaving the lane by slipping a pair of these covers right over them They are made of high-quality vinyl with an elastic top to keep water, mud and dirt off your shoes Ladies Small: 5 to 8 1/2 Ladies Medium: 9 to 11 Ladies Large: 12 plus Mens Small: 5 to 7 1/2 Mens Large: 8 to 9 1/2 Mens X-Large: 10 to 12 1/2 Mens XX-Large: 13 plus