Material: The wheelchair headrest is made of breathable mesh cloth material, sweat-absorbent, and comfortable to the touch. Applications: Suitable for wheelchairs with seat widths ranging from 40 cm to 50 cm. Durable: Features a thickened carbon steel brace for enhanced stability, resistance to skewing, and long-lasting durability. Design: Includes a high-density head pillow that is detachable and washable for added convenience. Easy Installation: Simple to install and securely attaches to the wheelchair. Specifications: Brace: Carbon steel Headrest: Mesh cloth Size S: 41 cm x 38 cm (16.14 in x 14.96 in) Size M: 46 cm x 37 cm (18.11 in x 14.57 in) Headrest design: As shown in the image Fastener type: As shown in the image Package Includes: 1 x Wheelchair headrest (S) 1 x Wheelchair headrest (M) 1 x Headrest 1 x Fastener (One item included from the four options listed) Note: Please allow slight variations due to manual measurement and differences in display monitors.