Features 1. Our protective sleeves are made of high quality Silicone, it is friendly to the skin and very safe when using. 2. Special rings on the coronary sulcus to stop shedding when you stretcher. 3. Our Sleeves are produced in a controlled vacuum chamber which draws out all of the air bubbles making the sleeve very durable and long lasting. 4. This super soft and stretchy sleeve fits most size. It is used for adding comfort and creating an airtight vacuum seal. 5. It can also help you sustain an erection, which is important if you wish to increase your size faster. Specification Material: Silicone Color: Transparent Package Size: 6 2 2 cm, 8 2 2 cm, 10 2 2 cm Weight: 20 g, 30 g, 40 g, 35 g Package Include: 2 Silicone Sleeve