This erection enhancing strap-on adds support and comfort for both partners. Realistically designed for use by men that seek a quality strap-on penis. This erection helper is gently curved for added stimulation and can be used with or without an erection. Take it up a notch by adding some vibration! This erection enhancing device includes a powerful built-in, variable speed bullet! Convenient and fully adjustable elastic straps are designed to fit most waist sizes. Measurements: 16.5 cm in total and insertable length, 7.6 cm deep hollow shaft, and 4.2 cm in diameter at widest point Material: Latex Note: One Size Fits Most. Requires 2-AA batteries, not included.