Let your imagination run wild with the life like grip of the center pleasure ring that squeezes just like the real thing! With two nice and tight channels to choose from and groove textures that will throw you over the edge, the super soft Thermoplastic Elastomers TPE stretches up to meet you with every stroke. Clean with Zero Tolerance masturbator toy cleaner and a warm water rinse. Features Stroker with two tightening channels. Satisfying for realistic fantasies. 1 inch diameter opening at large end. .58 inch diameter opening at small end. Both channels have grooved textures. Tightening ring in center of stroker. Pin holes on exterior for steady grip. Made from super stretchy and soft Thermoplastic Elastomers TPE. Length 6 inches, depth 2.54 inches, width 2.54 inches. 5 year warranty.