21-Speed Adult Foldable Mountain Bikes with High Carbon Steel Frame

Non-electric model Features: PROFESSIONAL 21-SPEED SHIFTING SYSTEM: Using professional's front and rear derailleurs and trigger lever, this mountain bike can easier to adapt to different terrain with quick, precise gear changes. All-terrain tires can conquer gravel paths, dirt paths, and rocky roads. POWERFUL SHOCK ABSORBING AND BRAKING: The shock-absorbing cushion is matched with a thickened shock-absorbing front fork that is fitted with a double shock absorption effect. Mechanical dual disc brakes have a strong braking force and can provide a better braking effect than other brakes, which increases the safety of cycling. COMFORTABLE RIDING EXPERIENCE: Lightweight aluminum alloy wheels with specially designed spokes can better reduce wind resistance during riding. The lock-out suspension fork handles bumps and dips for a smoother-feeling ride. FOLDABILITY & ADJUSTABILITY: This foldable bike features a quick-release clamp that allows you to fold the bike quickly, which is easier