Mobile Side Table: It's a customizable side table. Both 4 adjustable feet and 4 casters are provided for it, so you can choose to install the feet to keep it in place or install the casters for easy mobility. Each caster also has an integrated brake. Flat size: 21.6" × 14.2". Suitable for small spaces. Tiltable Tabletop: With a flexible aluminum hinge, the tabletop can be tilted from 0 to 65 degrees, making it easy to angle laptop/book for easy reading. We attach a stopper bar on the top which will effectively prevent the laptop or book from sliding off. Also, you can just keep the top flat to hold drinks or snacks. Height Adjustable: Different from most end tables with fixed height, ours have a wide adjustable range. Lift the tabletop up to 32.5" or put it down to 24.6" by whirling and fixing the knobs without effort. No need to worry about its size at all. It will perfectly hug most couches or beds with different heights Friendly Material: The tabletop is made of P2 grade particleboard. Polished surface makes it easy to clean and scratch-resistant. The frame is made of stainless steel coated with black paint which will last long. Both are friendly to the environment and harmless to the body. An optimal choice for indoor areas Simple, Stable & Easy: Each frame corner is supported by a triangle metal plate, making it more stable and has better load-bearing than other tray tables. Means it won't over-lean or break easily when holding heavier stuff. Thanks to its simple structure, the side table can be installed in 15 minutes