All Bathmate Hydropump products are manufactured from specially selected phthalate free, skin safe and medical grade materials, and each range has undergone a custom designed dermatological testing study undertaken by a world renowned specialist Clinic. Aspen Clinical Research have conclusively passed our Hydropumps as Clinically proven to be safe for use on the genital area. You can be assured that Bathmate Hydropumps are safe to use. Penis sizes 5 inches to 7 inches when erect. 10 inches interanl length.