• 4-in-1 convertible design for varying using methods• Selected sponge for ultimate comfort and firm support• Breathable and skin-friendly linen fabric for coolness• Machine washable cover for effortless cleaning• Modular design allows for separate or combined use• Humanized curved design improves using experience• Suitable for reading, watching TV, playing games, etc• Ideal for the living room, dormitory or oven outdoor use• Come with full installation for much more convenience