Special material and fasteners Made of ABS plastic steel and fixed by fasteners, this knee rest tray offers secure, durable construction with quick installation and easy disassembly. Easy to install The knee rest features a strong hook and loop structure for fast, tool-free assembly and removal. No tedious steps or extra tools are required. Unique design for control and convenience Raised molding helps control spills and prevents pens and other items from rolling off. A cup groove design keeps cups securely in place. Adjustable position for a custom fit The fixed position can be moved back and forth to suit different body shapes, reducing the chance of slipping off. This tray table supports better sitting posture. Practical use scenarios - Desk or lounging setup: Use on a chair or sofa to hold a cup, pens, remote, and small items within easy reach while working or relaxing. - Wheelchair or mobility aid: Fits on the knee rest to provide a stable tray surface for drinks and essentials, aiding posture and accessibility. - Bed or couch use: Keeps drinks, snacks, devices, and circulating items close at hand, helping minimize reaching and strain.