I used to lay the batting on thr ironing board and take the iron and hold it above (NOT on the batting) and keep pressing the steam buttom to steam out the wrinkles. But that was alot of work. So I bought a clothes steamer and it works wonderful to get the wrinkles out of packaged batting. I simply old the batting up and move the steamer up and down until I have the whole thing done. I do not unroll the whole batting--I just unroll it out of the bag and then hold it up and steam both sides and it is then pretty flat when I unfold it. Works for my anyway.