Review on GRIDMANN Pro Silicone Baking Mat by Michelle Miller

I recently bought this but am returning it. Didn't work as expected as the cookie fat went through the mat so I had to wash the top of the mat, the bottom of the mat as well as the pan. This is my first experience with silicone baking mats but I consulted with friends to understand that they should not be porous and only need to be wiped clean after use (not on both sides).