Soft Harness System for small dogs...the newest rage, popular for its comfort and safety features. Polyester air circulating mesh, comfortable around neck, adjustable chest belt. Comes in black, red and hot pink. Sizing Guide: xs:7-9"neck,11-13"chest,3-5 pounds, for miniature breeds (Chihuahua, teacups, etc.)or small breed puppies. Small:9-11"neck,14-16"chest,5-7 pounds, for Yorkies, Toy Poosles, Poms, Maltese. Medium:11-13"neck,16-19"chest,7-10 pounds, for shih Tzus, Boston Terriers, Dachshunds. Large: 13-15"neck, 19-23"chest, 11-15 pounds, Larger Shih Tzus, Miniature Schnauzer, Beagles, etc.