Supersize your pleasure piece with the Optimum™ Series Get Hard™ 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.