Pipedream Pump Worx Cock Trainer Pump System. Increase your size and confidence without dangerous medications or expensive surgeries with this safe and easy-to-use Cock-Trainer Pump System. With each pull of the Sure-Grip pump trigger, your pleasure rod will grow bigger, thicker, and swell with power. Once you penetrate the smooth, flexible PVC opening, you'll quickly discover throbbing, rock-hard erections that last and last, with no midway performance letdowns! The clear vacuum tube allows you to watch your cock grow, and the quick-release valve relieves pressure with a push of the button. The amazing training system is perfect for beginners and includes 3 soft PVC sleeves that gradually increase in diameter. Start out with the smallest opening sleeve and work your way up to the biggest donut. Each sleeve forms a perfectly tight seal against the skin and creates a powerful vacuum inside the chamber, forcing your erection to quickly expand its length and girth. To prolong ejaculation, slide the included enhancement ring over your shaft until it's nice and snug. The tight squeeze will prolong cumming, help maintain your erection and extend the fun. When you are done, simply detach the cylinder from the vacuum hose and clean it with Pipedream Toy Cleaner and warm water.