Penis extensions are used to expand the length and/or girth of a penis, to help keep an erection, and of course to increase the pleasure for your partner. A standard penis extension is flexible and hollow, and can be simply attached to the end of your penis. They can be made from a variety of materials, and come in different shapes and sizes to suit your fancy on the average, they add from 1 to 3 inches to your penis. A penis extension is a great addition to any sex toy collection, no matter what your reason is for getting one. Whether you're self-conscious about your size or you just want to push your partner's limits, make sure you're generous with the lube!