The side table in HDPE (high density polyethylene) material and all parts connect together with stainless steel bolts hardware, Weather resistant and fade proof, waterproof. Easy to clean and long-lasting. Double layer design provides more storage space. Raised rounded corners prevent scratches and Prevent items from dropping. Ideal rectangular side table is built for both ourdoor and indoor use. 18.5 lbs. more stable and more load-bearing. The construction of this double side table is very simple, you just need to tighten the screws according to the included manual to join the parts. It only takes about minutes, or even faster. If you have any questions, don't hesitate to contact us, we will be happy to help you to solve the issue.