It's all in the wrist when you play with the Kingpin Manual Stroker. Shaped like an unassuming bowling pin, this stroker has a unique shape that makes handling it an ergonomic dream. Inside the sporty cannister is a soft and stretchy TPE sleeve lined with swirling rows of stimulating beads. A convenient air release hole in the bottom of the cannister keeps the pressure comfortable, so all you have to focus on is the feeling of being toppled over with satisfaction. The Kingpin sleeve is easily removed for cleaning and has an IPX8 rating so it's waterproof and submersible.