Just bought a UTV cloth/tarp cover for the Mule. 39.99 at Cabela's. Real thick with covered vent holes to keep it form being a furnace on the inside.
Got here in about 4 days. The camo cover is $70, or you can get the olive drab for $40. Really happy with my purchase
https://www.cabelas.com/product/Cabelas-UTV-Cover/1229734.uts
BUT ,DO NOT! UNDER ANY CIRCUMSTANCES TRY TO UN FOLD, AND PUT THE COVER ON WHILE IT'S WINDY! UNLESS YOU WANT TO GO PARAGLIDING.