Developed by experts and handcrafted using only the best materials available, the advanced design of the Rival Boxing Professional Groin Protector is unlike that of any you have worn before. Featuring Rival's unique feather-light construction, it uses a combination of lightweight yet highly protective foams to offer unmatched levels of comfort and safety. With strategically placed flex-creases that allow for maximum mobility, this professional protector follows along with the natural movements of your body. Thick, dual waist straps with hook and loop closures allow you to adjust in two places for an extra secure fit. Sizing: Small - 26" to 30" waist. Medium - 30" to 34" waist. Large - 34" to 38" waist. X-Large - 38" to 42" waist.