JERK stoker JO toy rubs you just right...multi-ribbed inside to stroke as hard or soft as you like. Easy grip "dumbbell" shape stays in your lube-covered hand, grip it tight for max sensation, looser for a long stroke. This toy sucks...suction builds up in the tip where you want the most friction. It's made of our blubbery-strong FLEXtpr so it's soft and squishy on your junk.