Doc Johnson Vac-u-lock Easy Rider Ball
Get ready for the wildest ride of your life with the vac-u-lock e-z rider ball. it bounces, it rocks, it moves to your every position. this e-z rider ball comes with the vac-u-lock attachment plug.  compact for travel, easily inflatable, and supports up to 250 pounds.  compatible with all vac-u-lock attachments (not included).