The 7" sleeve works great when used on the penis and requires no cutting. While you do loose sensitivity, the thrill of its 1.75 inch width stretching out my wife is worth it. The price of buying the 10" sleeve is worth it. You can cut off the amount necessary from the bottom to fit the penis, with the remainder you can use as a smaller girth enhancer or ring. The 10" sleeve fits perfectly over the 7", doubling the girth enhancement...although you will need plenty of lube and a solid erection to accomplish this. While you probably won't be able to climax with this on, you will definitely enjoy the feeling of your wife afterwards...as will she. Definitely not for the faint hearted but a good stepping stone to converting the Mrs to something larger.