Type of item... Collars, Leashes, Harnesses Leash Length: 120cm Chest: 16-38cm Waist: 20-44cm Estimated Weight: 1.8-3.6kg I purchased this based on the estimated weight of 1.8-3.6kg, but it was too small for my 3.4kg Toy Poodle and I couldn't use it. My dog is rather slender, but since the product's estimated weight range is broad, I personally feel it's more suitable for dogs weighing around the early 2kg range. It's new and unused, but I did try it on my dog once. Please understand this before purchasing.