?Everything you need to get hard and stay hard!? ? American Pumpers AssociationKit includes: Sta-Hard® erection pump with flanged base for secure seal, Soft and stretchy removable donut, Easy squeeze bulb / quick air release valve, Silicone rings in 2 sizes, Tight and stretchy ribbed stroker, multi-speed vibrating stimulatorABS (cylinder, release valve) TPR (donut, masturbator) Silicone (rings) Phthalate-Free PVC (hose) Rubber (bulb) PP (controller) ABS with Silver Plating (stimulator)7.75" x 2.25" / 19.75cm x 5.75cm (cylinder)2.25" x 1" / 5.75cm x 2.5cm (stimulator)3.25" x 1.5" / 8.25cm x 3.75cm (masturbator)1.5" / 3.5cm (medium ring)1.75" / 4.5cm (large ring)Requires 2 AAA Batteries