Size options and compatibility 7 size options to fit Twin, Full, Queen, and California King mattresses. The large triangular wedge pillow aligns with the width of the mattress and can also be used as a headboard or as sofa pillows, offering versatile placement in different environments. Triangular wedge design and benefits Unique triangular wedge shape provides support and elevation for the upper body. Supports a good sitting or sleeping posture, which may help prevent healthrelated discomfort. Serves as a stylish accent that enhances the look of your bedroom or living room while delivering practical support. Materials and construction materials: the cover is smooth, soft, and breathable; the backrest pillow is built for wear resistance. The triangular pillow insert is filled with PP cotton, offering good rebound, soft feel, and longlasting durability; it is softer than memory foam and resistant to deformation over time. Removable cover and care features Removable pillow cover with tufted buttons for a clean, tidy appearance and easy cleaning. The cover is designed for durability and comfort, suitable for daily use. One Side Pocket provides convenient storage for small items you need close at hand. Use scenarios In bed: use as a backrest during reading, watching TV, or working from bed to maintain an upright posture. On a sofa: add height and support for lounging, relaxing, or extended seating without strain. As a decorative headboard: place at the head of the bed or against a sofa to create a chic, practical focal point while providing comfortable support. Anywhere you rest: suitable for floor lounging, daybeds, or guest spaces where extra back support is beneficial. Notes on performance and suitability Designed to align with mattress width for seamless integration into your sleep or lounge setup. Combines functional support with decorative appeal, offering a practical solution for daily comfort and style without unnecessary fluff.