This high-quality waterproof pump offers you ample possibilities to grow in both directions! The insertion sleeve is made of smooth silicone, ensuring a comfortable experience. Surprise yourself each time with how big you can get! At the touch of a button, the extremely powerful pump creates a super-strong vacuum, giving you a quick and powerful erection. The soft silicone opening forms a tight yet comfortable seal, so you can enjoy its benefits in wet environments without worry. WARNING: Please read product manual before using any type of vacuum pump orconstriction ring. Stop using the devices immediately if you experience any pain or discomfort.