Dr. Joel Kaplan Anal Dilator Kit comes with 3 different size butt plugs. Firm, pliable butt plugs are the perfect anal trainer providing incremental stages. The small butt plug measures 3.5 inches by .75 inches, the medium butt plug measures 4 inches long by 1 wide up to the large butt plug measures 4.5 inches long by 1.5 inches wide. Endorsed and prescribed by Dr. Joel Kaplan. Safe and pure for body and pleasure. Made using phthalate free, non-toxic materials PVC. Recommended lubricants are water base. Always clean before and after use. Dr. Joel Kaplan Anal Dilator Kit is a registered trademark for California Exotic Novelties.