The Dynamic Extension is a love muscle with a natural strapless look &amp; feel will provide the DYNAMIC way to explosive orgasms. Designed for use with or without an erection. Includes a personal lubricant pillow pack.&nbsp;The rubber on these is about .25 inches thick. <ul> <li>Features:</li> <li>Designed for use with or without an erection</li> <li>Stays on your penis without straps</li> <li>Natural strapless look and feel</li> <li>Comfortable for user and partner</li> <li>Includes lubricant pillow pack</li> </ul> <strong>Inside measures 7 inches in length with a 1 5/8 inch wide opening<strong></strong></strong>