Increase your size and confidence without dangerous medications or expensive surgeries with this 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.