I have just found the most wonderful marking mens made by Pilot. They are the Pilot FriXion Erasable Gel Pen. (Stock #31557). They come 3 to a pack at Target for a little over $5.00. They are so awesome because you can mark on the fabric, yes even on the right side, let it stay on there for many weeks and then just touch it with a warm iron and "Bingo", all the markings are completely gone. At the bottom of the pack it says Rollergel. The packs come with either a red, black and blue one or a red, orange and black one. I Love, love, love them.