Made from premium-quality nylon and sturdy plastic fittings, the DOCO Signature O-Ring Collar offers a perfect balance of durability, comfort, and safety. The fully welded O-Ring is uniquely positioned for easy leash attachment. This collar features a breakaway system that secures the buckle and allows you to refasten it before your dog can slip free. It also includes an ID ring to keep your pet.s identification securely attached. Compatible with DOCO Nylon Leashes: DCSN1048, DCSN1072, DCS1148, DCS1172, DCS2048, DCB1122, DCB1148. Key Features: Made from 100% high-quality single-ply nylon Stronger tensile strength compared to polyester Resistant to mildew, aging, and abrasion Easy-release plastic buckle for quick adjustments Tri-glide slider for customizable sizing Heavy-duty O-Ring for leash and ID tag attachment Bright, vibrant colors for excellent visibility Made from premium-quality nylon and sturdy plastic fittings, the DOCO Signature O-Ring Collar offers a perfect balance of durability, comfort, and safety. The fully welded O-Ring is uniquely positioned for easy leash attachment. This collar features a breakaway system that secures the buckle and allows you to refasten it before your dog can slip free. It also includes an ID ring to keep your pet.s identification securely attached. Compatible with DOCO Nylon Leashes: DCSN1048, DCSN1072, DCS1148, DCS1172, DCS2048, DCB1122, DCB1148. Key Features: Made from 100% high-quality single-ply nylon Stronger tensile strength compared to polyester Resistant to mildew, aging, and abrasion Easy-release plastic buckle for quick adjustments Tri-glide slider for customizable sizing Heavy-duty O-Ring for leash and ID tag attachment Bright, vibrant colors for excellent visibility