Sturdy Plastic Material: Made of high quality pp plastic material, waterproof, sturdy and durable, not easy to damage. Anti-ultraviolet, rough design on the surface, sturdy and durable, anti-friction and not easy to scratch, sturdy and portable chair side table, ideal for camping, beach and other outdoor activities. Easy to install and to use: Simply clamp the cup cup to the tubular part of the chair and keep it in good condition. Our chair shells are widely used in various folding cross-legged chairs, lounge chairs, oval zero gravity chairs, etc. (most of them have round tube frames). Ideal for Camping: The cup holder is an ideal choice for your camping chair. It offers you a practical table with cup holder and phone tray. It is designed to fit most outdoor chairs and sun loungers with a round tubular frame. Please note that it is not suitable for square tube frame chairs. Multifunctional Cup Holder: This product has both a cup holder and a phone tray, so you can get the best possible use effect from the product you purchased. You can also find extra space on the tray, which is very convenient for placing books, sunglasses, food or other items to take with you in the sun. Wide Range of Applications: When you are camping, fishing, swimming or other indoor or outdoor activities, you can use it on the side table of sun loungers, camping chairs, deck chairs, etc. When you need to rest, just put your phone on the table, which is very suitable for camping, sports, beaches, yards and other activities.