- This uniquely rounded stroker is made from a super-stretchy material that snugly hugs and then extends, giving in and springing back with a tantalizing feel! Simply pour lubricant into the ball, slip inside and start stroking! You’ll love the way the material bounces up to greet you and surrounds you with supple yet firm pressure! Experience mind-blowing orgasms exactly when you want them and discover why these strokers are truly ‘da bomb!’