Jelly Future Flex Vibrator measures 6 inches in total length. Future Flex Meteorite is a multiple speed vibrator with a smooth tip and many external nubs on the shaft for added stimulation. Future Flex Meteorite Vibrator requires 2 AA batteries. Batteries are not included. Jelly vibrators are close in look and texture to silicone, but are not quite as smooth and lifelike. Jelly is a great material for people who want the realistic feel of a dildo but do not want to pay the higher price for silicone. Jelly dildos can be a little bit stiffer than silicone dildos.