This adult vacuum erection sleeve has been designed for increased comfort and its base is made from a high quality TPE (thermoplastic elastomer) material, known for its softness, durability and environmental friendliness. The sleeve has a width of 7.5cm and an internal bore diameter of 2.8cm, hand-measured for exact dimensions, providing stable support for the main body. The base features a slip-in groove in the middle that fits perfectly into cups approximately 6.5 cm wide, ensuring a tight fit between the device and the cup, preventing loosening or disconnection during use, thus increasing safety and comfort. The product is available in a natural shade of leather that closely resembles real human skin, creating a visually harmonious experience.