“The Rogz NightCat Safety Collar is made from snag-free 100% polyester webbing with a reflective printed design stitched on for night time visibility making it stylish and durable. It also features a breakaway safety buckle that is designed to break open if your cat’s collar gets snagged offering safety during their adventures.” Webbing width: 3/8" Girth adjustability: 8 - 12".