The Bencmate recovery collar is a soft, comfortable and inflatable collar that prevents pets from scratching or biting their injured area. And it does not interfere your pet's peripheral vision, they can eat, drink and sleep normally. The premium inflatable collar is great for pets recovering from surgery or wounds and it will not mark or scratch furniture, you can deflate it and store it in a small space when you do not use it. Size details: X-Small: Neck Circumference up to 5" Small: Neck Circumference 6"-9" Medium: Neck Circumference 8"-12" Large: Neck Circumference 12"-18" X-Large: Neck Circumference 18" and upNote: For larger breeds with longer limbs, or breeds in between sizes, always size up.How to use 1. Insert your pet's everyday collar through the inner ring loops of the collar. 2. Inflate the collar via air valve(pinch & blow). Inflate until it feels full, but not hard. 3. Fasten everyday collar onto your pet and stick the strap that should be placed at the back of the neck then adjusted it for a perfect fit.IMPORTANT: 1. Always monitor a pet post-surgery to ensure collar is working properly. 2. Designed for pet use only. Not intended to be used as a flotation device. WARNING: Please read the instructions carefully before use, if used it improperly that might cause the dog?s discomfort or suffocation.