Play your way. This Vac-U-Lock attachment in smooth silicone features a curved design specifically for g-spot stimulation and is compatible with any Vac-U-Lock harness or accessory. The G-Spot Silicone Attachment is also o-ring harness compatible. Vac-U-Lock is the world's first and only patented pleasure system, revolutionizing harness play and providing endless possibilities to mix and match within your collection to create the perfect toy.