Martingale Collar or Quick-Release Buckle! Perfect for the girly dogs. Rosy pink with a touch of light green peeking out from behind a path of dog paw prints. Could it get any sweeter? 1" width only in two sizes: Small-10-15", Med-15-23". Machine wash cold separately or with similar colors. Place item in a lingerie bag to keep the hardware from clanking around your washer. Line dry. Do not iron. Materials: Die cast nickel plated hardware, Quick release hardware is a combination of acetal, polypropylene & Nylon webbing and Polyester trims.