Key Features:Soft and Stretchy: The ring fits easily over most cylinder openings.Cushion: The thick, comfortable sleeve provides cushion as you push your shaft inside the hard, pumping cylinder.Body-Safe: Made out of body-safe, quality, phthalate-free rubber.Fits Most Pumps: Perfect addition to enhance most pumps and increase comfort, seal, and efficiency.Introducing the Universal Pump Sleeve, an essential for anyone using a penis pump. Made from a soft, stretchy material, it easily adapts to most cylinder openings. The thick sleeve provides an excellent cushion, offering maximum comfort as you slide your shaft into the hard pumping cylinder. With body-safe, phthalate-free rubber, you can ensure the best care for your skin. Designed to enhance most pumps, it increases comfort, improves the seal, and boosts overall efficiency. Invest in the Universal Pump Sleeve for a more pleasant and effective pumping experience.Measurements:Outer diameter: 3 inchesInner diameter: 1.2 inchesHeight: 1.5 inchesMaterials: RubberColor: ClearNote: Use only with water-based lubricants.