Lupine products are proudly built in Conway, New Hampshire and Guaranteed (Even if Chewed). They are not chew-proof (no fabric is!) but if they get chewed, LupinePet will replace them. Search on 'Lupine Guarantee' to see how EZ it is!1-inch-wide collars are suitable for medium and larger dogs. There are three adjustable size ranges: 12=20 inches; 16-28 inches; 25-31 inches. To determine collar size, measure snugly around the middle of the dog's neck, then add an extra 5-percent for a comfortable fit. Or, measure the current collar. For more information please see the Sizing Guide in the images.Lupine Originals are offered in many different designs and colors to compliment your pet's coat-color and personality. This jacquard-woven nylon has the design woven into the webbing, rather than printed or sewn on. Products are made with strong bar-tack stitching and welded steel hardware, and the ends of the material are turned under and stitched to protect fur and skin.Matching padded handle leashes, harnesses and other accessories are available.Machine or hand-wash, using warm water and mild soap (no bleach or bleach alternatives). Air dry completely before use.Lupine products are not intended for tie-out