DOCO® O-Ring Collar is made from high-quality nylon and plastic joints. The unique design of the fully welded O-ring location allows for easy leash attachment. The design ensures a breakaway system that captures the clip and allows you to reattach the collar before your dog frees itself from the collar. Identification ring for attaching your animal's ID. Feel safe and confident 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 clip - Triple-slide system for easy size adjustment - Heavy O-ring to withstand leash and ID tag - Bright colors easily visible at all times