The Beach Chair is an item that Facepunch introduced in the RUST SUNBurn DLC, released on the 10th of July, 2020.
The beach chair is a haggard-looking sun chair that has begun to disintegrate.
It does provide all the same comfort benefits as sitting in a regular Chair, but with the added benefits of making your player characters look much more relaxed.
The beach chair comes in several different colors and materials that you can choose when you craft the item, you skin it on a Repair Bench later.