The comfy collar does not restrict the field of view, so your dog or cat is less likely to bash into furniture. It is also much easier for them to see and reach their food bowl. Each comfy collar has a scratch and bite resistant outer layer and a separate inflatable inner tube, with a velcro fastening strap on the outside edge and fabric hoops to secure against your pet's collar on the inside edge. The top-up valve can be accessed through the outer layer and pushed in so that it stays flush. There is also a zip on the outer layer for easy removal of the inner tube. The Comfy Collar is available in five sizes