Size and placement Large triangular wedge pillow designed to align with the width of the mattress and can also serve as a headboard alternative. note and fluffing The backrest ships compressed. Remove the vacuum bag, shake vigorously for 5 minutes, and allow 48 hours for the pillow to restore its original loft. Materials and construction Cover: breathable polyester fabric with a soft touch and wearresistant surface. Fill: soft 15D polyester fiberfill, offering good density and resilience. Removable cover: to remove the pillow cover, unzip, take off the cover, and unbutton the buttons. Ergonomic design Triangular wedge shape supports the natural curvature of the back and provides elevation for the upper body, helping reduce back and shoulder strain and offering proper support while reading or resting. Multipurpose use Provides maximum back support for upright activities such as working on a laptop, watching TV, playing games, or reading in bed. Can be laid down to change the angle for reading a book or using a cell phone. Use scenarios Scenario 1: Reading or browsing in bed with comfortable upperbody support and adjustable elevation. Scenario 2: Working on a laptop in bed while maintaining an ergonomic posture. Scenario 3: Watching TV, gaming, or using a phone in bed with a comfortable, angle.