Lamb Weasand are all natural gullets from USA lamb. They are twisted together to form the equivalent of a lamb jerky or chew. These are great for keeping teeth and gums healthy and clean. They are USDA approved and have no preservatives or chemicals added to them. The Weasands are packaged bulk in bags and are sure to please all sizes of dogs. We recommend this item as a chew for dogs 40lbs and less and more of a treat (jerky) for larger dogs. These chews are high in glucosamine which aids in joint health! The Weasands do vary in length, from 4 - 6 inches in length.