I bought the suv garage in a box 10 years ago. I upgraded to the heavier material after the roof fabriic started to show wear along the peak after about 4 years. I also added a foam pipe insulation along the ridge poles. The heavier fabric and pipe insulation has done well for 6 years now. I live in Kansas where there are high winds and have had no issues.  Originally I bought this to store my VW camper but now it is my home gym and I love it.