Cal Exotics Optimum Power Masturball Optimum Series Master Gauge Penis Pump With EZ Pull Trigger Optimum Series Master Gauge Penis Pump With EZ Pull Trigger Amazon.com: CalExotics Optimum Series Advanced Automatic Smart Penis. The Big Mans Pump is designed to accommodate the length and girth of the most well endowed men. Enjoy optimum size, pleasure, and firmness with a pump created to satisfy the most commanding cocks! This twelve inch long, oversized cylinder uses vacuum power to increase pressure and blood flow to your cock as you pump. Over time, this process can increase sensitivity, maximize size, and give you the firmest of erections. Its perfect for enhancing both solo and partnered play to make your manhood even more impressive. The pump features a clear cylinder so you can watch your progress and enjoy the view of your monster rod. Three colorful, interchangeable sleeves with various dimensionssmall, medium, and largeare included with your pump to ensure the perfect fit. All three are made of super soft TPE for incredible comfort, optimum pleasure, and an airtight seal that will help you get the most out of your pumping experience. The comfortable bulb lets you increase your pressure with a squeeze of your hand. And, when youre done pumping, a quick release valve relieves the pressure from your penis immediately. Treat your penis to maximum growth, pleasure, and hardness with a pump designed for the biggest and longest men. Reach your ultimate penis potential! Package Weight 18. 40 Ounces Package Dimensions 3. 50W by 17. 00H by 5. 50L inches