Use this multi-speed vibrator alone or with the sleeve. The iridescent vibe is 7â X 1â and uses 2 AA size batteries (not included). The clear jelly sleeve not only adds length but girth as well. The overall length is now 8à½â with a diameter of 1à¾â . Use a small amount of lube and the vibe slips easily into the sleeve. A pillow of strawberry is included too just for you!