For the price I was impressed by the product. It's plastic, not glass but for the price I wouldn't have expected anything else. I purchased one for the house and one for our small office. The lights stopped working on my office model, but it was probably due to me overfilling it with water. Quite noisy if you're using in the living room, but it's perfect for a kitchen or hallway. Also works well with Albas oil if someone has the cold. I have recommended the wee unit to friends which I guess says it all.