Erection pump with flanged base for secure seal. Soft and stretchy removable donut. Easy squeeze bulb with quick air release valve. Stretchy and comfortable extender. Adds 2"/5 cm to length. Textured ribbing inside and out. Discreetly enhances both length and girth. Super-stretchy, strong and pliable cage enhancer. Added scrotum ring for support and secure placement. 2 sizes of stretchy erection enhancer rings. Fits securely on the base of erection pump cylinders. Slides easily from cylinder to penis to maintain erection. PS (cylinder), Phthalate-Free PVC (hose, bulb), ABS (release valve), TPE (donut) TPR (extender, enhancer), Silicone (rings). Requires 6 Watch Batteries (12 Included). From CalExotics.