The Adult Pool Retainer, model 747, is an adult swim diaper designed for use by adults with incontinence. These reusable retainers are made of polyester with a polyurethane lining. They have non-binding elastic openings, and do not have bulky padding. SIZES: Small (28 to 30 inch waist), medium (32 to 34 inch waist), large (36 to 38 inch waist), extra large (40 to 42 inch waist), extra extra large (44 to 46 inch waist), and extra extra extra large (48 to 50 inch waist). COLOR: White.