Ideal for art and craft projects of all kinds, these drawing boards from Helix are very lightweight and portable, making them great for classroom settings, studios, and for tucking into portfolios and backpacks. Available in a variety of sizes, they feature a smooth, sanded surface and a honeycomb core. Two sides have imbedded metal edges for use with a T-square . This reinforcement also prevents the board from warping. All of the edges are sanded smooth. These drawing boards measure 5/8" thick.