The Basic Double Jiggle Ball is a simple yet amazing jiggle toy; it is made from ABS plastic with a silicone handle to ensure easy insertion and comfort. The jiggle balls have an insertable length of 4.75 inches and both balls have a girth of 4.5 inches at their widest point. They are really simple to use, just coat the balls in a high quality water based lubricant, gently insert them into the vagina until only the handle is left outside the body and away you go! When you can feel the balls begin to come out of the vagina, clench your vaginal walls to bring them back up. The free roaming steel balls inside the balls mean you will get extra stimulation while you are moving around! This will keep you on the edge of pleasure and slowly turn you on more and more the longer you use them!