These durable panniers are made from a very tough, hard resin polyethelene, which will not break in extreme cold. The panniers are rigged with heavy duty, 2" nylon hanger straps for use on either a Decker or sawbuck pack saddle and accommodate screw-in legs for use as a table (legs sold separately). The oversize storage opening features a recessed lid secured with eight, easy-to-open, 5/16" threaded wing bolts. Inspected and approved by the Interagency Grizzly Bear Committee as bear resistant.