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