Collar width: 3/8 Inches; Collar length: 12 Inches Description Materials: Cotton Fabric, Breakaway Collar, D Ring, Interfacing, Split Ring, Metal Bell Dimensions Collar width: 3/8 Inches; Collar length: 12 Inches Description ~PLEASE REVIEW BEFORE PURCHASE~ There is a D-ring attached to the collar which gives you the option to add a tag or whatever you would like. My collars have a medium interfacing in them so they are medium-firm. This will help the collars hold their shape and be comfortable for your favorite pet. ~Breakaway buckle that will open under mild pressure (do not use with a leash) ~Adjustable collar size: length is 6 - 10 inches, width is 3/8 inch