Currently I train/compete with a Norfolk Terrier and have a 1 year old Miniature Poodle puppy. The Norfolk is big chested for a small dog and the Poodle is small and still growing. I have owned many harnesses: Hurtta, Julius, Comfortflex, all have their pros and cons depending on what you plan to use them for. I watched the video from CR website and exactly as they said not a cool /fancy looking harness but very adjustable for any dog body! I love these because my boys can wear them for walks, agility training, tracking etc. and I don't have to worry about their movement being restricted. Quality is excellent so far! I like D ring in back and front!