Made of genuine 1" wide leather Chest girth: 21" - 26", neck circumference: 15" - 21" Allows the dog to have relaxed movement of muscles Lighter weight, strong and durable Trimmed with contrast color thick waxed thread and riveted for extra strength Made of 1" wide genuine leather, trimmed with contrast color thick waxed thread and riveted for extra strength. This size is recommended for Medium breeds, fits 21"-26" chest.