I just bought this skinny tire stack cover. I have 32" tires that I had to store and had to struggle with them to cover my 4 tires. and I can't lock it. When I tried to zip the zipper up the zipper pulled on the material and saw it was about to rip/tear. This is the weakest and thinnest material, if I'm lucky it will probably last 4 months in direct sunlight. I would say that's the thickness of a layer of a windbreaker, if that. I could easily grab it with both hands and rip and tear it to pieces if I wanted to. Very poor.