Adonis Pump is the Pump of the Year by the American Pumpers Association. Easy to use enhancement pump with easy grip handle plus two interchangeable sleeves. Flanged cylinder with universal measures. Removable sleeve provides added stimulation, or may be used independently as a masturbator. Tapered Silicone donut for maximum suction. Flexible, non-crimping air hose. Quick release purge valve. Safe and pure for body and pleasure made using phthalate free, non-toxic materials: SAN cylinder, ABS plastic handle, release valve, PVC hose, Thermoplastic Resin TPR sleeve, Silicone donut. Cylinder measures 8.75 inches long by 2.5 inches wide. Donut measures 2.5 inches long by 2 inches wide. Sleeve measures 5.25 inches long by 1.75 inches wide. Always clean before and after use plus between partners.