The large tray can hold drinks, a large bowl of snacks, remote controls, cell phones, tablets, and other essentials. It also comes with a 360° rotating bracket that can hold a phone or tablet, allowing for adjustable viewing angles. Yes, the opening angle of the couch arm tray is adjustable to fit different shapes and sizes of sofa armrests. The tray is slim and foldable, allowing it to be easily stored under your couch or in a small space.