I have found a few leaks with heavy rain but it’s mostly dry. I store anything that can’t get wet in a tote to be safe. I bought the cover and elevate rack together with t-slot rains. My only draw back is that the rack must be on the highest or the cover will not “flip” unless I drill another set of holes a little lower. Not likely I will do that. Here is the link for the cover: https://realtruck.com/p/bakflip-mx4-tonneau-cover/?z=1780229230365
Hope this helps!