Blueberry Pet Naughty Boy Artistic Sapphire Basic Dog Collar, Neck 7.5"-10", X-Small, Collars for Dogs Neck 7.5-10", Width 3/8",Size X-Small; 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; And their matching leashes are also sold separately to complete the look Made of high density polyester, which imparts softness and durability to the product; Those buckles are made from ecofriendly plastic. The metal D ring is chrome coated to add durability. Picture was taken from a size Medium (Width 3/4", Neck 14.5-20")