Check the listing for details. Universal Advanced Silicone Penis Pump Replacement Sleeve Donut Seal Blue. Condition: New. Listed at 13.95 USD. Advanced Silicone Penis Pump Replacement Sleeve Item Condition: Brand-new A supple silicone sleeve that adds a smoother, more pleasurable feel to your pumping session, the Advanced Sleeve fits securely around the opening of many penis pumps and enhancement systems. Made from a high quality, extremely hygienic material, the sleeve cleans up in a snap, and is hypoallergenic, perfect for sensitive skin. Silicone is very durable, just be sure to use a compatible water based lubricant to keep it in top shape. Fits pumps up to 3 inches (7.5cm) in diameter. *Pump pictured sold separately. Heavy duty, high quality, Silicone pump sleeves Fits up to 3?/7.5 cm pump cylinder Silicone 3? x 1.25?/7.5 cm x 3.25 cm inkfrog terapeak