If you're new to penis pumps or looking for something simple and portable to take away, then this high-quality Classix one is for you. The 7.5 inch cylinder, smooth sleeve and pump are easy to use and provide an instant boost to the size of your penis. The strong plastic cylinder is transparent, allowing to see your progress as you pump, and features a small air release hole to one side, for safe pumping. Attach the flexible tubing to the cylinder, slip inside the sleeve, place a finger over the air release hole and pump, pump, pump! The rubber sleeve sits perfectly around the opening to the pump and creates a perfect seal around your shaft, for maximum suction. Apply some water-based lube to the edge of the sleeve to enhance suction.