Wallies Peel and Stick Monthly Chalkboard Calendar Wall Decal, 38-inch x 25-inch Black chalkboard wall decal pre-printed with gridlines for you to fill in the month, days and dates. Works on walls, wood, glass, paper and more. Chalkboard wall decals are removable and repositionable. Write on the chalkboard contact paper with chalk and wipe clean with a soft cloth. Just like chalkboard contact paper except that Wallies chalkboard wall decals are easy to remove and leave no sticky residue.