I purchased one at a local quilt show about a year ago and keep it right by my piecing machine. I usually use a dry iron to press my blocks in progress but do keep a spray bottle of water handy to mist any deep creases. I do like to use the wool mat, however, I have found that it makes my seams very flat for a few minutes but once the seams cool off they tend to "warp", so I press and sew, press and sew.