This extender is made of 100% super stretchy hygenic silicone. It adds 2 inches in length and 0.5 inch in girth. The added cock ring keeps the Mansizer in place and adds extra sensation. To use, apply lubricant to cock and insert into the Mansizer, stretch cock ring around balls. A thinner bottom layer allows for full sensation, and the 3X stretch makes it easy to put on. Before insertion, the length of the Mansizer is 6.5 inches and girth is 5.5 inches.