The Boneyard Bust a Nut cock/ball ring is all a man needs for hours of pure unadulterated fun. The ring is designed with superior materials and production thus increasing both comfort and life span. The powerful and iconic Boneyard branded and engraved design has a sleek and soft touch silicone finish and features a superior and durable stretch. The Bust a Nut can be worn as a traditional cock ring or ball stretcher and can be used for nut stacking to give that perfect tug and slap on the ass while pounding away. The rings provide all day comfort when wearing under your jeans or swimsuit to show off that perfect man bulge. They will also withstand the punishment of your longest play sessions time and time again. Thick girth for powerful erection. No roll comfort fit. Xtreme durability. 100% Soft Touch Silicone. 2 X stretch nut ring. External diameter 2.0 inches. Internal diameter 1.07 inches. This product is safe with all lubricants, completely hypoallergenic, non-irritating and compatible with sensitive skin.