Our handmade to order dog collars are fully adjustable and are made of quality products, machine washable cotton fabric with a heavy nylon core.Standard collars use nickel plated welded steel D-ring, durable plastic tri-glide and a contoured side release plastic buckle.Martingale collars use, nickel plated welded steel D-ring, durable plastic tri-glide and welded rectangle rings. The 1.5-inch option standard collar uses a nickel-plated welded steel D-ring, metal tri-glide and a contoured side release plastic buckle. Martingale option in this size use nickel-plated welded steel D-ring, metal tri-glide, and welded rectangle rings. Please be advised: Our collars are not for excessive pulling dogs or designed for an outdoor tie out. Currently available in 3/4-inch, 1-inch and 1.5-inch width in standard or martingale options. Sizing is as follows (Neck Size): Extra Small: 9"-11"Small: 11"-13"Medium: 13"-16"Large: 16"- 22"Extra Large: 18"-26" Please note that the pattern may look slightly different from the photo - the pattern will vary depending on where it was cut from the fabric. This is especially true for the larger patterns. Custom orders also available - just send a message. Care instructions: Machine wash gentle or hand wash using a mild soap/detergent, soaking is not recommended.