The BAM Trekking case features a rectangular design with curved edges. The hard walls are covered with Cordura nylon. Built in are modular backpack straps and two expandable accessory pockets. The interior is made of injection-molded foam with a soft black velvet covering for a secure and gentle fit. This double case is from BAM's New Trekking line; it is an updated, more compact version of the original Trekking line.