INOVART Kidz Art Activity Mat And Frame Assortment Mat frames can be decorated with a variety of artist mediums including all water-based paints, markers, dyes, inks and more Includes 25 each - 8"x11"(6"x9" art size), 6"x9" with 3-1/2" oval5"x7" (5"x3-1/2" art size) 6"x6" (4"x4" art size)100 backing boards - (25 for each size mat frame)100- 6" folding easel backs Mats are made of 20 ptclay coated, neutral PH board stock with a smooth, non-glare finish White one side