Dr Joel Kaplan Adjustable Penis Extender - Clear Write a review California Exotic Novelties, Llc Sale! from 1470 /per Qty. Buy Now Endorsed by Dr. Joel Kaplan. Soft and stretchy sleeve adds girth and length. Textured and nubbed for added stimulation. Trim for a custom fit. Totally reversible. TPE 7.75x 2.25/ 19.75 cm x 5.75 cm.