Product Specification: Material: PVC Size: Inside diameter: 9cm 3.5in, outside diameter: 26cm 10.23in Pets Neck:8"-11"(20cm-28cm) Package Included: 1 Dog Donut Cone How to use it? 1. Pinch and blow to inflate the collar via the air valve, please pull the zipper before inflating. 2. Insert our pet's everyday collar through the inner ring loops of the cone to secure the donut in place. 3. Place the cone on your pet and stick the strap that should be placed at the back of the neck then adjusted it for a perfect fit. 4. Pinch the inflation valve port to deflate faster when deflated after use, easy to store. Warm Notice: 1. Due to manual measurement, the size and weight may have a certain error. 2. Due to the difference between different monitors, there may be a slight color difference existed. 3. If your pet wants to escape when he she put on the collar for the first time, we hope you can work with your dog to acclimate him her. 4. Please measure the neck circumference of your pet before purchg.Lovely Donut Design: This cartoon-style dog donut cone is a lovely gift for your pets, allow your pet to avoid the restriction of vision, movement, playing, eating, drinking, or sleeping during the healing period, which is difficult when wearing an Elizabethan collar or e-collar. Clean Easily: This dog donut cone collar is made of upgraded non-stick fabric. The outside of the soft dog cone is comfortable and breathable fabric, pet hair will not stay on it, inside is environmental PVC material, it is very easy to clean. Blow-Up Design: The inflatable design, You can inflate this collar with a balloon pump or mouth blowing. It has a leak-proof switch that lets you deflate it when not in use. This makes it easy to store and reuse. Adjustable Easy to Use: The dog recovery collar has an adjustable strap, so you can easily adjust it to the right position,and adjust the the tightness of the dog collar around your dog's neck to the perfect fit. If you find the dog cone is too large for your dog and easy to fall off, we suggest you put on your usual dog collar first, then put on this dog cone, it have three straps to fix the dog collar, so as to prevent the cone from falling off. Avoiding Licking: This inflatable dog donut collar is a perfect dog neck cone alternative after surgery. The cone for dogs after surgery can prevent pets from licking wounds, sutures, especially rashes or after surgery. This inflatable e collar can prevent dogs and cats from biting other items when in the veterinary examination and treatment, beauty, grooming, surgical procedure, shower, trimming the nails and deshedding.