High vacuum electric pump 3 sleeve sizes for a snug fit Extra-large chamber Waterproof Phthalate free RoHS compliant Materials: silicone, AS, ABS, PVC Pump size: Length – 13.375", Diameter – 2.75", Circumference – 8.75" Three sleeve sizes: (internal diameter of opening), Small – 1.125", Medium – 1.375", Large – 1.5" Voltage – 3.2V Rechargeable Charging time: Up to 1 hr. Use time: 1 hr.