Supersize your pleasure piece with the Optimum(TM) Series Get Hard(TM) Head Pump Set. This high-tech, completely automatic pump delivers 3 levels of intense suction, 5 vibration functions & a vibration tickler cushion for truly explosive results. Increase stamina or give yourself over to total pleasure with 3 levels of sucking stimulation and 5 independent functions of vibrations. A soft vibrating contact pad with ticklers gives you the full-coverage sensation you have been craving. Dive deep into intense suction while the soft, vibrating internal landing pad uses the teasing ticklers to thrill your pleasure tool with full coverage stimulation. Enjoy powerful suction and a superior seal with two unique interchangeable donuts. Use the simple donut for your regular pumping session and the other ultra-tight donut for knee-shaking stimulation. This removable open-ended chamber sleeve is easy-to-use, easy-to-clean and requires no special care.