PDX Elite Blowjob Power Pump is a incredibly realistic intermittent suction that provides a lifelike ''milking'' sensation for the best blow job of your life! - Advanced IST Technology = Lifelike Intermittent Suction - Enjoy maximum pleasure with realistic intermittent suction that automatically milks your shaft and feels just like a real oral sex experience. Surround your penis with an incredibly stimulating vacuum-action suction that snugly tugs you to ecstasy! - The Results Are Clear - The clear durable suction tube features a convenient ruler and added magnifying lense to watch yourself get bigger and thicker with each teasing tug of suction. - Removeable Soft Oral Topper - The stretchy oral topper features supple lips that form an air-tight seal that creates suction and amazing results. The topper is removable for easy cleaning, and the pump may be used with or without it.