Power up for bigger thicker erections with the Optimale Power Pump. Watch your growth through the large clear vacuum cylinder featuring a soft silicone sleeve for an air-tight seal a stylish pressure gauge and easy to read measuring guide to monitor progress. The strong auto-pump action is easily delivered with just the push of a button and a quick release valve button allows for customizable pressure. The Power Pump helps draw blood flow to your penis for the ultimate erection increasing your size and sexual satisfaction. Clean before and after each use with soap and warm water or toy cleaner. Remove batteries when not in use.