Size and placement The large triangular wedge pillow is designed to align with the width of the mattress and can be used as a headboard. Note: The backrest is compressed. After removing the vacuum bag, shake vigorously for 5 minutes and allow 48 hours for the pillow to regain its original fluff. Soft material The pillow cover is made of polyester fabric that is breathable and has a delicate feel with wear resistance. It is filled with soft 15D polyester fiberfill, providing good density and resilience. To remove the pillow cover, unzip the pillow, take off the cover, and undo the buttons. Ergonomically designed triangle shape The triangle shape is designed to support the natural curvature of the back and provide elevation for the upper body. It helps reduce back and shoulder strain and offers proper support while you are reading or resting. Multipurpose Provides maximum back support for upright activities such as working on a laptop, watching TV, playing games, or reading in bed. It can also be laid down at a different angle to lie on while reading a book or using a mobile device.