This is our high quality and good looking shelf which is made of strong metal materials and Sturdy particle board. Buy it and you'll have a sturdy and life-long shelf. It's very stable because of the metal x-type structure design behind the shelf. And it has four feet with adjustment pads which can be used on uneven ground. So that you don't have to worry about the problem of falling shelves causing injuries to children. Put our 4 tiers ladder shelf in the living room and make it becomes a beautiful decoration in your home. Put in the study to be a bookshelf to help you organize files and books. The shelf also can be put in the balcony to be used as a flower rack.Features:It is made of strong metal materials and Sturdy particle board The metal x-type structure design enhances the stability of the shelf. 4 adjustment foot pads can be used on uneven ground. Easy to install and have detailed instructions