The small size with the biggest storage function. It has shelves and it is designed to organize stuff, you could organize any scattered stuff. It is free-standing and it can be put anywhere you need. You could use it to organize your kitchen, your living room, or any mess place. The structure is manufactured of wood and metal. The metal is rust-free, the manufactured wood is water-proof, anti-scratch, and easy to clean. The footpads are adjustable and It could keep stable on uneven ground.