BiteNot pet collar the bitenot collars are an excellent alternative to the traditional Elizabethan collar. It provides unimpeded peripheral vision and allows them to eat, drink, sleep and play while protecting back, rump, base of tail, flanks, chest, abdomen, and genitals (even feet in small breeds). These collars are not recommended for protecting eyes or ears. These collars are made of flexible plastic and foam and are machine washable helping you easily keep it clean. They are the only cervical restraint with a harness strap and that means these collars stay on. When choosing size, remember that the collar must stretch from behind the animal's ear to the top of its shoulder for maximum protection.