I've been using the same 10x20 frames for 3 summers! I buy a new top at the beginning of each summer so it's nice and bright again! These have been through a weekend of hot days, rain and wind and even a light dusting of snow! I love the bags as they are easy to put on. The wheels aren't perfect, but it fits on a dolly great! Myself and my 12 year old can put these up in less than 5 minutes! I put 60+ lbs of sandbags on each leg (not the ones they come with) I also ensure the top is properly secured tight on the corners so no water collects. Last summer I set up 20 different canopies and these were the easiest and lightest!*Just be sure to un velceo the straps before you close it up! ?I even had a bull run into one and busted up the leg. I bought the new pieces direct from eurmax for less than $80 and with just 1 screwdriver I had it replaced and it's been going good!