I have 2 XXS harness vests , 1 blue and 1 pink fastens around neck and under the tummy and are adjustable they are a bit bobbled but still have lots of wear left Fits a very tiny puppy, up to about 6/7 months . my dogs are a cross between a Chihuahua and Yorkshire Terrier. they fitted perfect until about 6 months the pink has lettering born to be a princess and blue has cool dude . will sell separately if needed |