Features a "one size fits most" design. Soft latex sheath snaps off for greater comfort and easy care. Unique one-way valve prevents fluid return. Elastic waistband (28" (71 cm)) before stretching x 2 1/2" (6 cm) provides a comfortable, secure fit. Entire unit is washable. Includes deluxe waistband, sheath and 20 oz. leg bag with adjustable latex straps.