The mat arrived sooner than expected which was great! I unpacked it immediately and put it on my table, and it flattened out immediately- no curling. It went into service immediately, as Santa's workshop needed a surface for wrapping packages. Usually, I rest a small end of packing tape on the edge of the table to hold it for a moment. I learned not to do that with the ExactMat--it left a sticky residue, which must be removed. (I used "De-Solv-It" citrus solution). Other than that, I am SO pleased. AND I appreciated being able to order samples--I chose the Riverstone), and the individual customer service before ordering the mat. I highly recommend.