Everybody wants it! A soft. lifelike ULTRASKYN sleeve with a plush contoured head wraps around a powerful multi-speed vibrator to create the Shakin` D. The simple twist control. realistic material. and detailed contours of this 7 inch wonder make it easy to shake. shake. shake your way to intense climax every time. The D by Doc Johnson is an exciting collection of our best-selling shapes. reimagined in lifelike ULTRASKYN. We`ve committed to keeping the quality high and the prices affordable. so everybody can get The D.