Key benefits Unique design for spill control and item retention: raised molding helps contain spills and prevents pens and other items from rolling off, while a cup groove provides a convenient place to place a cup within easy reach. Easy, tool installation: knee rest uses a strong hook and loop closure for quick assembly and disassembly without tedious procedures or tools. Durable construction and secure mounting: made of ABS plastic and steel, fixed by fasteners for reliable stability and easy installation and removal. Adjustable position for comfort and posture: the fixed position can be adjusted back and forth to suit the user's body shape, reducing slippage and helping promote proper seated posture. What makes it stand out Combines spill containment, convenient cup placement, and posture support in one tray. Tool , fast setup and takedown with a robust hook and loop system. Lightweight yet durable materials designed for repeated assembly and disassembly. Materials and compatibility Materials: ABS plastic and steel. Fastening method: fixed by fasteners for secure mounting and easy disassembly. Performance and functionality The raised molding effectively contains spills and keeps small items from rolling away. The cup groove adds a dedicated place for beverages to stay in reach. The adjustable positioning helps tailor support to the user's body shape and reduces slippage during use. Size and dimensions Specific size details are not provided in the description. Design emphasizes compatibility with typical knee rest tray setups and adjustable positioning to fit different users. Use scenarios Desktop or sofa use: ideal for meals, writing, reading, or using a device while seated, helping to keep items organized and within reach. Bedside or lounge seating: convenient for snacks or drinks during rest, with reduced risk of spills and improved posture. Work or study tasks: supports a comfortable seated posture during long sessions, with a stable surface for papers, notebooks, or light devices. Notes To install and remove, no tools are required beyond the hook and loop fasteners. The design focuses on quick setup, secure hold, and easy disassembly when not in use.