Mr. Ed Lockable Silicone Horse Bit Gag from XR Brands. To hinder with this darkly sexy bit gag is a sight indeed. Both the gag and straps are made of flexible premium silicone, perfect for extended wear. The straps are adjustable and feature an optional locking buckle so they stay pleasantly restrained and quiet. Easily sterilized, body safe, scentless, tasteless, and phthalate-free. Measurements: 25 inches in total circumference, fits heads between 17 and 23.5 inches in circumference. Gag measures 5 inches in length and 0.8 inch in diameter. Material: Silicone, metal. Color: Black. Note: Locks not included .