Ripstop nylon fabric.
As this type of fabric is hard to find I can share my stock for your DIY project.
55g/sq meter (1.7oz), 160cm wide, uncoated, non-waterproof, breathable, true rip-stop (reinforced, not square textured) nylon. Price per meter, posted as continuous piece of fabric. I always cut the sample square along the reinforcement fibers.