Lose yourself in spiraling sensations and find release with the Tenga Flex Masturbation Sleeve. The Rocky Black Tenga Flex is a reusable masturbation sleeve featuring a soft outer casing. Using malleable materials moulded into a spiral form, the case provides a just-right fit for all shapes and sizes and a strong vacuum sensation. The soft case allows the user to squeeze and twist at will and as you move the Flex up and down, the spiral loosens and tightens, creating new sensations. Additionally it opens upon insertion and tightens on exit, making a variety of stimulating pressures. The removable elastomer sleeve is easily washed with water for multiple uses. The Rocky Black has strong spiraling ribs that stimulate with dynamic suction, and has more intricate inner details and a tougher elastomer sleeve than the Silky White version.