This beautiful open mouth gag designed by Dungeonware is made with 7/8 oz. premium grade leather It features a plastic mouth piece which has a 1-1/2" inch inner diameter This inner diameter measurement is the correct size needed to put most private parts through. The outer diameter of the gag piece is Aproximately 1-7/8". This mouth piece is not covered in leather like other brands offered. The reason for this is obvious, You want to be able to clean it! Bacteria can seep into leather and make a leather covered piece unhealthy. Our products are designed to last the rest of your life. The straps are 22" inches long from buckle to the last hole. Long enough to fit just about anyone small or large. It also comes with a limited lifetime warranty. We have been manufacturing bondage equipment for the BDSM community for over 25 years. Our designs are proven not only to be functional, but to last. If you want the best, it has to be Dungeonware! One last note, This item has a few less than stellar feedback ratings and makes the product look like its inferior or undesirable. yet we have sold thousands of these through the years and it is one of our best sellers but you rarely hear feedback when people are happy with a products.As with anything you buy it may not fit every person the same. Most people who buy this item are extremely happy with it. If they weren't we would change the design since we make it . But we know most people likemit just the way it is. We are sure most of you will too!