Collarable Collar - The inner collar of the collar can be fixed with a pet's collar together, or the pet's car seat belt can be directly attached to the inflatable collar to make pets safer in the car. Rigorous Materials - Soft fleece on the outer layer, using safe material for baffles and inflatable inner core, not easy to deform and be damaged. The inner and outer layers are removable for cleaning, which will dry faster than using polyester padding and reduce bacterial growth. Pet-Acceptable Collar - Compared to the Cones, this dog inflatable collar will not interfere with pet movement and eating, and it can also sleep on the collar, so pets won't refuse to use it. Wide Range of Uses - In addition to being used during pet surgery recovery, this cat recovery collar can also be used as a pet pillow, toy, or used in conjunction with pet car seat belts to make pets safer in the car. Color: gray Size includes: S inner diameter 5.5CM outer diameter 20CM, M inner diameter 9CM outer diameter 26CM, L inner diameter 13CM outer diameter 38CM, XL inner diameter 15CM outer diameter 41CM Package includes: 1pc* collar