6in. cervical pet collar is a comfortable and easy-to-use alternative to the Elizabethan collar. It has a 21in. 25in. neck circumference. This cervical collar allows your pet to eat, drink, sleep, play, run up stairs and around corners. With this collar your pets peripheral vision is unimpeded making them calmer and happier. This collar is made of a flexible plastic and is secured by a hook and loop attachment and a wrap around strap and harness.