The CyberPulse pump offers you ample possibilities for penile enhancement. The insertion sleeve is made of smooth silicone, ensuring a comfortable experience. With 13 functions, 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 quick and powerful erections. The soft silicone opening forms a tight yet comfortable seal, so you can enjoy its benefits around water without worry.