It''s a strapless strap-on designed to give skin-on-skin contact without breaking the continuity of action to adjust straps and buckles. It works, by using your internal muscles to hold it in place with the bulb as the shaft protrudes at a natural angle. The Tantus Strapless Slim is easier to hold and control than the original; the Slim is 10% lighter than the original model, making it lighter for the wearer. EASIER TO HOLD & CONTROL: The Tantus Strapless Slim is easier to hold and control than the original; the Slim is 10% lighter than the original model, making it lighter for the driver. It''s a strapless strap-on designed to give skin-on-skin contact without breaking the continuity of action to adjust straps and buckles. SIZE MATTERS: Bulb Diameter: 1.5", Bulb Length: 2.5", Dildo Diameter: 1.25", Dildo Length: 5.5" VIBRATOR: Single Speed Removable Waterproof Bullet Vibe, Uses 3 x LR44 Type Batteries SAFE FOR YOUR BODY: Made from Tantus'' own unique formula of 100% Ultra-Premium Silicone EASY TO CLEAN: Hypoallergenic, Hygienic, Boilable, Bleachable and Dishwasher Safe.