Description: 100% brand new and high quality Made of non-toxic and tasteless silicone material with high quality, it's soft and flexible. Easy enough for you to put on because of the adjustable strap. Luminous effect, can emit light when dark. Multi-Function. Prevent Dog biting, Barking, and Chewing licking wounds and other problem. Material: silicone Specification: Size S Mouth Circumference: Approx. 100-130cm/39.37-51.18inch Size S Mouth Circumference: Approx. 135-160cm/53.15-62.99inch Size S Mouth Circumference: Approx. 160-180cm/62.99-70.87inch Size S Mouth Circumference: Approx. 180-200cm/70.87-78.74inch Package Includes: 1 Piece Pet Dog Muzzle (4 Pack) Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Meanwhile, please be reminded that due to lighting effects, monitor brightness / contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item.