Check the listing for details. Automatic Smart Pump Replacement Sleeve Penis Vacuum Cylinder Enhancer Devices. Color: Clear, Condition: New. Listed at 32.39 USD. Ready for an ultra-comfortable pumping session or would you rather indulge in some sensational solo play? Whatever you're craving, the Optimum™ Series Automatic Smart Pump™ Replacement sleeve is ready to take your pleasure to the next level. This ultra-stretchy, ultra-tight sleeve has an open-end design and intensely ribbed chamber for an intense stroking experience with truly explosive results. The premium sleeve fits into most standard pumps but can be used independently for a passionate stroking experience. The premium TPE is body-safe, unscented, and phthalate free to keep your most sensitive spots, happy and healthy. Enjoy easy clean-up with this maintenance-free stimulator sleeve, simply wash with soap and warm water before and after each use. Use ample lubricant for easy insertion. Measurements: - 5.