Let the Precision Pump Standard provide the superior suction and ultimate comfort you need to maximize your pleasure. This pump encourages growth and stamina using a vacuum system, increasing size during use to help you reach your full potential. The cylinder measures in at 8 inches by 2.25 inches, making it the perfect size. A clear vacuum cylinder features universal incremental measurements to help you keep track of your progress during your regular pumping sessions. For increased pleasure, An easy squeeze pressure bulb makes amping up the suction a breeze; and, if you take it a little too far or want to wrap up for the day, a push button release valve will suck all the air out immediately. The flanged base and removable, soft-ribbed donut keep you comfortable and wonderfully stimulated while you pump for maximum pleasure. A flexible, non-crimping hose makes increasing your pleasure potential a cinch in any position. Your pump comes with a stretchy enhancer featuring easy grip handles, so you can switch seamlessly from pump to solo or partnered play without losing a bit of that awesome size.