Lightweight Folding Design: This mountain bike features a high-carbon steel dual suspension frame, weighing only 39 lbs with a foldable design for easy storage and transport. The 26-inch wheels paired with a 17-inch frame suit riders from 5'3" to 6'0", supporting up to 330 lbs for both stability and convenience. 21-Speed Gear System: The 21-speed shifting system allows effortless adaptation to various terrains, with fingertip gear changes for a swift, wind-chasing ride. Whether climbing hills or accelerating on flat roads, it delivers precise performance with minimal effort. Reliable Braking System: Equipped with front and rear disc brakes, this folding bike provides powerful stopping force, ensuring safety even at high speeds or downhill rides. The quick-release feature enables easy adjustments for instant stopping control. Advanced Suspension: The dual suspension system effectively absorbs road shocks, tackling rough trails and bumpy terrain with eas