I used these for spices as well as bathroom cabinet and drawer organization. They are made up of a very sturdy and attractive plastic and are easy to clean which was important to me for makeup storage. The ridges on the shelves are on the bottom side, so no powder or dust would collect on them and look gross. I also really like the small ridge around each shelf so spices and bottles won't fall off easily. I bought four and wish I had a few more.