DOCO® Martini Bean Collar (DCS008) Heavy duty stitching for long lasting quality Pattern stitched special premium nylon Higher tensile strength than polyester Nylon is resistance to mildew, aging and abrasion Less pressure on the chest and neck Heavy duty D-Rings for leash or tag attachment Durable plastic side release buckle Tri-glide for easy full size adjustment Vibrant colors and the patterns are easy to see at any times! DOCO® Martini Bean Collar (DCS008) Heavy duty stitching for long lasting quality Pattern stitched special premium nylon Higher tensile strength than polyester Nylon is resistance to mildew, aging and abrasion Less pressure on the chest and neck Heavy duty D-Rings for leash or tag attachment Durable plastic side release buckle Tri-glide for easy full size adjustment Vibrant colors and the patterns are easy to see at any times!