I wish the sheets were bigger (but I knew what size I was ordering). I thought at first the sheets were useless because the first one I tried wouldn't stick to anything. But then I realized that sheet was not a white board sheet. It was in the package to help keep the sheets flat. The ones that cling have a black backing that has to be peeled off to reveal the sticky side. I put them on cupboard doors (the inside surface, of course) and have no complaints. Adheres to a smooth surface as it should, giving a smooth writing surface.I don’t want an enormous whiteboard in my postage stamp size cubicle. These fit the bill completely. Easy to position, they come on and off and keep me on task. Nice product.The package comes with 3 pieces of whiteboard sheets, and arrives relatively fast. To anyone considering purchasing, I warn you to read the product description carefully---this item is a non-adhesive sheet meant for extremely smooth areas like stainless steel or mirrors. Therefore, anyone looking to replace a whiteboard on their wall, this is not for you. The sheets do not stick well on rough walls (no matter how smooth you think your walls are). Otherwise, the product stays true to its description, and is easy to setup and use for simple functions.