Review on Unleash Creativity With Mind Sparks Dry Erase Blocks - 4 Colorful Blocks, 3" X 3 by Shannon Myers

Just be advised that this item is not returnable--it is listed as a 'flammable' or 'hazardous product' that is not allowed to be shipped back. (?) The box I received was in excellent condition, even sealed--but it had a damaged block in it. The dry erase surface was peeling off/delaminating on a corner, a factory defect. Thankfully amazon agreed to send a replacement (thank you amazon), but it doesn't give me much hope for the durability of the product itself, as this item is meant to be tossed around by kids as a game piece. Also-- I will have to look into what it's made of that gives it a 'hazardous' warning for shipping. That worries me a bit!