DOCO® O-Ring Collar is made from high-quality nylon and plastic fittings. The unique design of the fully welded O-Ring location allows for easy attachment of the dog leash. The design ensures a breakaway system that captures the buckle and allows you to reattach the collar before your dog frees itself from the collar. Identification ring for attaching your pet's ID tag. Feel secure and comfortable with the collar. *Matches with DOCO® nylon leash: DCSN1048, DCSN1072, DCS1148, DCS1172, DCS2048, DCB1122, DCB1148 Special Features: - 100% high-quality single-layer nylon - Higher tensile strength than polyester - Nylon is resistant to mold, aging, and abrasion - Quick and easy-to-open plastic buckle - Triple-slide system for easy size adjustment - Strong O-Ring for use with leash and ID tag - Bright colors for easy visibility at all times Size chart