Play your way. This Vac-U-Lock™ attachment in smooth silicone features a textured "ripple" design with multiple stimulating surfaces and can be used with any Vac-U-Lock™ compatible harness or accessory. The Ripple 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 offering endless possibilities to mix and match within your collection to build the perfect toy. • Silicone Attachment with Stimulating Bulbed Shaft • Use with Any Vac-U-Lock™ Compatible Harness or Accessory • O-Ring Harness Compatible • Phthalate-Free, Body-Safe