Man, two months is nothing though. I've had cheap poly tarps that made it a whole summer before the sun turned them into confetti. UV eats that thin weave alive and you won't see it coming, it just splits one day when you pull it. The canvas one was probably heavy and stiff because it was actually doing its job, blocking sun and breathing a little instead of cooking your wood into a sweatbox. Come back after a full year of real weather and let us know if it's still in one piece. I'm not saying the $80 one was a bargain, but four winters is four winters.

Wait so the 28L carry-on thing actually worked for 3 weeks? How did you deal with like weather changes or did you just do laundry every couple days? I'm genuinely trying to figure out if people who pull this off are just wearing the same 4 shirts the whole time lol.