21-Speed Mountain Bike for Adults, 24-Inch High-Carbon Steel Frame with 100mm Front Suspension & Double Disc Brakes, Anti-Slip Tires, Red

High-carbon steel frame (24x16") provides unmatched durability for riders up to 250 lbs, ensuring stable performance on rugged trails 21-speed thumb shift system with double disc brakes delivers smooth gear transitions and reliable stopping power on varied terrains 100mm front suspension fork absorbs shocks from rough paths, enhancing comfort during 4'2"-4'9" rider height range adventures 24x2.125" anti-slip tires feature reinforced tread patterns for superior grip on dirt/gravel/paved surfaces, reducing slip risks 85% pre-assembled design requires minimal setup - assemble handlebar/saddle/front wheel/pedals then adjust brakes/gears for quick trail readiness