What I say on portable fire pit
It may be possible to find a fire pit cover that is specifically made for your particular model of fire pit. If you are looking for a generic type of cover then expect to find one that looks like a simple canvas sack. These may or may not have a zipper. Others are more adjustable because they make use of snaps or straps to help you seal the fire pit better. The generic fire to cover it is the least expensive kind on the market.