This premium-quality chalkboard has a smooth, matte surface (baked-on porcelain enamel, fused with steel) that works great with chalk, and Chalk Ink ® markers- both Wet Wipe and Artista Pro (waterproof).. AND will hold magnets. Durable, scratch & stain-resistant surface that is excellent for heavy-duty indoor/outdoor use, especially in commercial environments. Hand-made maple wood frame (1.5"). Made in the USA. Maintenance instructions for outdoor use: Every year or as needed, lightly sand and recoat frame with polyurethane