Introducing revolutionary IST technology! Incredibly realistic intermittent suction provides a lifelike “milking” sensation for the best blow job of your life! Customize your pleasure just the way you want it! Enjoy realistic intermittent suction by itself, or thrust to enjoy deep-throat stroking action—whatever you’re in the mood for! Become bigger and thicker than ever before! The crystal-clear tube is designed for a firm grip and has a convenient ruler to gauge your expansive growth and a magnifying section to view your increasing thickness. Supple lips on the stretchy TPR pleasure-donut help create a tight seal and firmly caress your shaft if you chose to use your PDX Elite Blowjob Power Pump as a stroker.