I added a removable snack bowl to the top tube bag. It also acts as a baffle and the center compartment. I have been making bowls like this for a while as a dog water bowl that can fold flat and fit in your pocket! The liner of the bag and bowl is Herculite M80 vinyl. Water proof, UV coating , mildew resistance and won’t crease when folded. It has no stretch and is one of my go to heavy duty outdoor fabrics.
by Hill_William_bags