Quality canvas used. The belts are PU leather and are OK. The zipper is single slider which is OK, but I modified it and added two locking sliders so I could open the sack anywhere along the zipper to allow access where wanted. Just bought the proper zipper repair kit which came with locking sliders. Bought some canvas and a snap kit to install two openings in the chest area. Also considering adding some boot speed lace hooks to be able to snug it up like a corset for extra restriction.






