Paww Secret Agent Collar, Large, Blue Stash pocket: Straight from the 007 gadget lab, the on-board stash pocket lets you store a couple of ID tags, keys, or emergency pick-up bags Comfort: Light but tough mesh lining breathes to keep your dog cool when the heat is on; Plush nylon material is more compliant that webbing for maximum comfort Buckle and D-ring: Curved quick-release buckle rests more comfortably against your best friend's neck Burly steel D-ring keeps you in control Materials: Double rip-stop nylon, nylon webbing, and polyester mesh Large neck range: 16 to 24-inch (40 to 60cm)