These bags are built to compete with the big box stores.  Big River Outdoors uses two layer offset quilting construction, ultra durable water resistant ripstop shells, and super cozy flannel liners.  They include two way zippers, so you can zip two bags together, a massive shoulder, and zipper baffles.  They are oversized at 85" X 35" X 35" and come complete with two custom compression straps and a stuff sack for simple transport.