Dr. Joel Kaplan Reversible Masturbator Sleeve is like having two different male masturbation devices in one. One side is smooth and the other side has textured tickler ribs on the entire surface. Endorsed by Dr. Joel Kaplan. Super stretchy, soft, and tight masturbator reverses for ridges or nodules. Made using phthalate free, non-toxic materials Thermoplastic Elastomers TPE. A water based lubricant is recommended. Stroker measures 5 inches long by 1.75 inches wide. Bulk weight 2.9 ounces. Always clean before and after use. Category: For Men, Masturbators, Non-Beaded. Dr. Joel Kaplan Reversible Masturbator is a registered trademark for California Exotic Novelties. Sex Toys and Sexual Wellness.