Made with 3D breathable mesh and a sponge head pillow, this product features a lightweight and sturdy Alalloy brace for reliable support. Backrest adjustability The backrest can be easily mounted or disassembled to fit your travel chair . Headrest design The headrest portion can be simply removed when not in use or to facilitate wheelchair closure. Compatibility and fit Compatibility note: please ensure that the wheelchair pushing pipe width is suitable for the fixed clamp (approximately 14). Compatible with wheelchairs in the 16 to 20 inch range (wheelchairs not included). Materials and performance 3D breathable mesh provides ventilation and comfort during use. Sponge head pillow adds soft support. Aluminum alloy brace delivers strength while remaining lightweight. Key benefits Lightweight and durable construction for everyday use and travel. Easy installation and removal, with flexible mounting options. Provides adjustable support to accommodate different chairs and users. Use scenarios Scenario 1: On a travel chair during trips or outings, where quick mounting and fit adjustments are needed for comfort and stability. Scenario 2: For long wheelchair rides, use the headrest for neck support and remove when not required to reduce bulk. Scenario 3: In care facilities or with multiple wheelchairs, easily switch backrests to fit different chairs and users without tools.