BE anything you want to be. The Body Extensions Hollow Strap-On System by Doc Johnson® is a unisex collection of harnesses and hollow silicone attachments designed to stimulate the body and allow penetration play regardless of the type or function of the wearer’s anatomy. This high-quality 4-piece set includes an elastic and premium silicone harness designed for maximum comfort and durability and three premium silicone attachments crafted to maximize the sexual pleasure and empowerment of every user. Each product in the Body Extensions collection includes detailed instructions for care and usage.