I never was too happy how I used to close this backpack – there is for sure some soldier proof instruction around. I´m heading for some serious barbecue and I thought again how to close it better. There are two d-rings / loops in the middle of the rucksack, just go with one of the sting in the upper and pull and the with the other string in the lower and pull. Go with the ends around the canvas and do a bow knot. Thats it, it is closed and fixed to the pack. Since the material is very strong and stiff other methods until now resulted in a too high profile of the back.