This versatile set comes with two different gag sizes, which secure easily and quickly via snap hooks at each side. The durable leather has a high quality look and feel, with an adjustable buckle at the back with an optional locking feature. The metal is nickel free and brushed for a refined look. The ball is made of smooth silicone for an odorless, tasteless and easily cleaned ball gag with just a slight amount of give while remaining comfortable. Small gag 13 inches in diameter; Large gag 1.75 inches in diameter. Strap is adjustable from 15 to 23 inches in circumference.