The E-Z Rider Rocker is a great Vac-U-Lock accessory toy that lets you attach your Vac-U-Lock dildo or vibe of choice to the inflatable vinyl ball so you can rock and grind your way to the ultimate orgasm. The ball iteslf inflates easily with a bike pump or a strong set of lungs, just make sure to position the plug inside the slot while it's soft. The sturdy construction supports up to 250 pounds, and the pleasure possibilities with this toy are endless. Have a look at out Vac-U-Lock compatible dildos and vibes for the perfect penetrator.