One great things about real military gear is it's built tough. We ask manufacturers to make indestructible gear that weighs nothing. It's not possible, so gear is too flimsy. The military ignore their customers and make it strong enough. Straps are long enough too. ONLY military issue packs have straps long enough to fit extra gear under the lid. Civilian ones often are barely closable. Very useful if it's a wet tent! Or just to increase the capacity. One downside is they often have a drain hole. For civilian use that's just a way of getting wet contents if you put your pack down in a puddle.
Anyone know a way to seal them?
Qjs