Standard equipment on Frost River computer cases, briefcases, and luggage. All are built from dense, substantial, cotton web. The hardware is solid brass. The materials are premium quality– reliable and built to last. The one inch model is supplied with the Protege for laptops and iPad cases. The inch and a half are used with the briefcases. The two inch model is used on the luggage. Our standard, burly web, and our standard, solid brass.