Specification: Product Size: XS:15X6CM Neck Diameter: 6cm Neck Circumference: 15*18cm S:22X23CM Neck Diameter: 8cm Neck Circumference: 15-23cm M:27X27CM Neck Diameter: 9cm Neck Circumference: 20-30cm L: 40x40CM Neck Diameter: 13.5CM Neck Circumference: 32-45cm XL: 45x45CM Neck Diameter: 17.5CM Neck Circumference: 46-55cm Material: Environmentally friendly PVC + short plush outer ring Scratch and Bite Resistant: The inflatable collar will prevent pets from biting and licking their injured area or surgical site and promote recovering from surgery or wounds, while still allowing them to rest comfortably. Adjustable Strap: There is a strap on the opening of the collar, you can adjust strap for a perfect fit and put the strap side at the back of your dogs neck in case of biting. And you can insert your pets everyday collar through the inner ring loops for a stabilization. Comfortable Design: This premium protective collar is made by comfortable and breathable cotton fabric. Inflatable design and the soft outside material will let your dog wear it comfortably and it does not block your pets vision, they can eat, drink, sleep and play normally. Easy to Use & Clean: This Inflatable recovery collar's inside is environmental PVC material and the short plush cloth are detachable, easy to clean. You can deflate it and store it in a small space when you do not use it. Please NOTE: This collar suitable for different age or size dogs and cats, meet your different needs. Please refer to our size chart before ordering.