1. Plastic 2. ATTACH A TABLE WHEN NEEDED Get your independence back with the Gray Universal Wheel Chair Tray; The tray table in the wheelchair will not interfere with the wheels when not in use, and will not affect the advancement of the wheelchair. Designed to provide front body posture support, users can easily sit in a wheelchair 3. INTIMATE DESIGN 22.8 x 21 x 3 inch (58x53x7.6cm) working surface fits most laptop sizes; Universal mobile phone/iPad bracket card slot design, patients can watch videos, play mobile phones, telecommute, and teach in wheelchairs. It is also equipped with a cup slot design for easy placement of cups, Dishware. Pullout drawer to put keys and other items in. Storage hooks to hang up handcarried straps, shopping bags, etc. 4. MULTIFUNCTIONAL DINING TABLE MATERIAL Made of lightweight ABS plastic material, strong and durable, it will not be deformed after longterm use, 5. FITS YOUR CHAIR Whether attaching to a power drive wheelchair, motorized wheelchair, or a manual push chair, this activity table wheelchair desktop fits most standard chair arms from 18 to 21 inches (45.7 to 53cm) wide. Multifunctional self table board, wheelchair, home chair, suitable for the elderly are all available, with professionally designed assistive devices, let the elderly and the disabled accompany happily.