These collars are visible to approaching motorists from distances of up to 600 feet in low light conditions. Their breakaway design allows cats to safely slip free if their collar gets tangled or snagged. They are adjustable for comfort. This Reflective Adjustable Breakaway Collar is made with the same reflective materials used by safety professionals. The collar is visible to approaching motorists from distances of up to 600 feet in low light conditions. Every collar features a unique printed pattern and a bell. The plastic slider allows you to adjust the length of the collar for comfortable fitting. A breakaway buckle allows your cat to safely slip free if the collar gets caught.