Wheeled Walker

Structural Features:  
1. Frame: Aluminum alloy with painted surface treatment  (common in lightweight and oxidation-resistant designs).  
2. Large-capacity travel bag: Equipped with a quick-install and pull-out mechanism  (similar to detachable storage solutions in mobility aids).  
3. Push handle: Perforated design with adjustable height  (common ergonomic feature in wheelchairs and trolleys).  
4. Rear handle: Integrated linked braking system  (enhanced safety for load control).  
5. Foldable design: Compact and easy to operate  (typical of space-saving mobility devices).  
6. Seat cushion: Thickened Oxford fabric padding  (improved comfort and durability).  
7. Wheels: 8-inch wear-resistant PVC wheels at all four corners  (standard for stability and low maintenance).  
8. Backrest: Plastic material, without meal tray  (simplified design for lightweight portability).