Our fabric flat-buckle collars are all hand-made in Canada with cotton fabric and nylon core. We think of these collars as lovely, functional, fashion accessories for your dogs. They are light weight and comfortable to wear and wash well on a delicate cycle in the washing machine. Since they are made of cotton they won't stand up to rough wear over a prolonged time - if you are doing a lot of active adventuring, we suggest looking at the Biothane collar collection as well. Fabric collars are mostly available in 3/4 inch, 1 inch, and 1.5 inch widths (with some exceptions), some fabrics are also available in 1/2 inch and 2 inch widths. Sizes for flat-buckle: Extra Small (7 - 12 inches), Small (9 - 13 inches), Medium (14 - 18 inches), Large (18 - 23 inches) and Extra Large (22 - 30).