Vinyl front-piece grips one of four included, stretchy silicone O-Rings in place with stout snaps, easily fitting around a variety of probes, dildos and vibes. Most toys that feature a wide, flanged base will be compatible. Low-rise design includes soft, durable nylon straps, they wrap around the waist and under your butt, harness comes pre-assembled, so all you'll need to do is tighten up the straps to a perfect fit. Fits most sizes. Spot clean.