The Vibrating Strap-on Panty Harness with Open Back has straps around the thigh, with an open back and adjustable straps that go around your butt. Simple yet elegant, these strap-on panties are perfect for you and your partner. Don't worry about complicated straps and buckles, just slip them on, add the toy and enjoy. With a variety of styles, shapes & sizes, everyone will find their perfect fit. With the patent-pending O-Ring System, almost all dildos and dongs will fit into this strap-on panty without the need of additional O-Rings. Each panty comes with a premium quality silicone rechargeable 10-speed vibrating bullet for extra sensations for you and your partner. Made of high-quality elastic compression material for a better fit, comfort & performance. The lightweight breathable fabric will draw away moisture from the body ensuring that when things get hot, you stay cool. Perfect for Packing, Pegging & Penetration. Available in 3 sizes: XS/S, M/L, XL/XXL. 1-year warranty. Pairs perfectly with All Ouch! & RealRock Dildo's & Dongs. Hand wash or hand wash programme, do not tumble dry, do not iron, do not bleach, do not dry clean, line dry. Unstretched waistband size: M/L - 14.8 inches - 18.7 inches Diameter of hole for dildo: 2.4 inches.