Because silicone is tasteless and odorless, it is ideal for insertion in the mouth. The Beginner Ball Gag is the perfect choice because the outer mouth piece is contoured to fit comfortably (it's original shape is based on an infant pacifier). The straps are leather that can snap off so you can wash the silicone: it's boilable, bleachable in a 10% solution and dishwasher safe. Velcro closures on the straps allow for maximum adjustment for head size and ease of fitting.Diameter of gag 1.6" Length: 2.5"