We have a fire pit set that didn’t come with covers, purchased from another vendor.  These covers are perfect!  We just measured & chose the size to fit our set pieces.  The material is weather resistant, and heavy duty.  The set is outside, under a tree, & it keeps tree sap, leaves, dirt, water, etc. off our furniture.  Our set will remain new looking for years to come because we found these covers from Wayfair!  Thank you!