Folds in one second and stores compactly: after folding, the volume is small and it can be transported conveniently in a car trunk during travel. Dual-function brakes for flexibility and ease: the handbrake design is simple, requires minimal effort, and is suitable for older users. Six-height adjustment: six selectable positions make the height easy to set, catering to users of different heights and enhancing comfort. Unique energy-saving universal wheel: the wheel features a patterned anti-slip design and can be configured for universal or straight operation, improving practicality and safety. Use scenarios: - Grocery shopping: fold when not in use, store in the car trunk, and unfold easily for loading and unloading groceries. - Travel or commuting: transport in and out of hotels or airports, with smooth handling on various surfaces. - Office, warehouse, or home use: move boxes and packages with minimal effort, benefiting users who need reliable, low-effort operation.