Complex sentence: A sunlounger is somewhat like a deckchair and bed-like in nature, the rear surface can be up to allow the user to sit up and read, or it can be reclined to a flat surface to allow sleeping in the horizontal position.
Split into simpler sentences: A sunlounger is somewhat like a deckchair and bed-like in nature. The rear surface can be up to allow the user to sit up and read, or it can be reclined to a flat surface to allow sleeping in the horizontal position.