The Tempered Glass Add-on is 10 time harder than regular glass. It has advantages over our standard self-healing PVC mat... It's completely stain proof ! Paints, inks and most glues either wash off or razor off with a flat razor-blade. Heat too, iron on it !! It perfectly complements the Glow system when you need a harder, (stain-proof) surface than the standard self-healing mat.
CUTTERPILLAR GLOW GLASS MAT
Glass Mat is relatively heavy item, 5 pounds... which is why the shipping is more than most.