When it comes to dry bags they need to be rubber coated. I bet Field and Stream just puts there name on a Chinese product which if rubber, works. If you are looking for a dry bag for your TW I chose this GearFirst Dry Bag backpack. It holds everything I need and if I stop at a store I can easily carry my valuables with me. It has three zipper pockets, two water resistant and one mesh. I'm all about multipurpose and this bag does that.