DOG NECK DONUT is designed to prevent dogs from biting injured areas during their recovery. This inflatable dog collar ensures your dog has a smooth recovery along with great comfort. The cute dog neck donut is a lightweight alternative to a conventional plastic cone of shame. Unlike traditional e-cone, with our dog e-collar / Elizabethan collar for dogs, no more bumping into wall & furniture. Without blocking dog's vision, inflatable dog collars for after surgery makes eating & drinking easier during pet's recovery. <br /> We currently have MEDIUM SIZE ONLY (Neck circumference: 11.5-13.5"). Please refer to 2nd & 3rd images. Highly recommend buying inflatable dog collar BEFORE surgery or hurt as a wound management kit.<br /> Dog doughnut collar is easy to use. <br /> 1. Insert your dog's everyday regular collar via inner loops, so the inflatable donut won't be easily pushed off or move around on neck. <br /> 2. Inflate dog donut collar via the air valve (pinch & blow at the same time) until it feels full but not overly hard. <br /> 3. Put collar around your dog's neck with opening side behind dog's neck. <br /> 4. Adjust tightness of inflatable collar for dogs using the velcro strap. Or adjust inflation level by letting some air out. If too loose, dog's arm can stick between neck & the ring. If too tight, it may lead to choking. <br /> 5. When not in use, just deflate for storing. Remove outer cover for cold washing. <br /> Notes: <br />* Donut dog collar is NOT chew proof. Not recommended if dog is a chewer or if other pets at home can destroy & pop it when not watching<br />* It may deflate slightly over time, so check & re-inflate once daily to ensure it is tight enough & fit around dog's neck <br />* In case air ring is damaged with holes, put duct tape on holes to fix it. An alternative is to put plastic grocery bags and stuff them into the cover to replace the ring. <br />* To avoid zipper breaking, don't pull too hard and hold both sides together when close