BLACK  AND RED QUILTED NYLON ZIPPER VEST AND  BLACK SOCK SET FOR DOGS...SZ M ...HAS SILVERTONE CLIP FOR LEASH BREAKAWAY ZIPPER ALONG BACK...L 12" ALONG BACK...NECK 12"...SHOULDER AROUND 14"...AROUND BELLY 16"...PLEASE MAKE SURE THESE MEASUREMENTS ARE FOR YOUR PET...SIZES DO DIFFER WITH MANUFACTURERS...NEW.