Blueberry Pet 6 Colors Better Basic Dog Collar, Orange Fusion, Medium, Neck 14.5"-20", Adjustable Collars for Dogs Neck 14.5"-20", Width 3/4", Size Medium; The collar does not stretch itself, please make sure leave only 2 fingers between collar and dog neck. The dog collars in the first main picture are sold separately. Made of high density nylon, which imparts softness and durability to the product; Those buckles are made from ecofriendly plastic This collar is a single product. However, it comes with matching leash/harness to complete the look. Leash and harness sold separately. Picture was taken from a size Medium (Width 3/4", Neck 14.5-20")