CRAZY BULL BM-009208K Made from tpr for a lifelike feel, the realistic opening adds to the experience for better-than-ever pleasure. Self-Lubricating stroker to your solo session for out-of-this-world stimulation. Run water through the internal tunnel to activate the self-lubricating design and slip into the tight, textured sleeve. The self-lubricating design can be enjoyed up to 20 times before more lubricant is required.