Bulk Weight: 9(oz) / 0.26(kg)Cylinder with precision measurement systemErection ring fits on the base of the cylinderSlip ring on base of penis when erectEasy grip handles on ring for easy removalRemovable pump sleeve for comfortable useLubricant includedLatex (sleeve) ABS (cylinder) PVC (hose) Rubber (bulb) Silicone (ring)8inx 2.1in/20 cm x 5 cm