Product Information Bike Type mountian bike Age Range Description 24" fits height 4'9"-5'4" (150-165cm) Frame Material Type Carbon Steel Handlebar Type Flat Handlebar Bike Shift Levers Shifter Lever with Gear Indicator Suspension Type Dual Brake Style Disc Speeds 21-speeds Rim Material aluminum alloy Included Components toolkits，Assembly Instructions，reflector Wheel Size 24x2.125 Frame dimensions (seat tube clamp to wheel center axis length) 15.5 load-bearing 250lb Tire Type Clincher【Durable Steel Frame】24x16 inch sturdy and durable steel frame, provide safe and stable cycling experience. Ergonomically design, suitable for mens womens height 4'8"-5'6"(56-66"), max weight is up to 250lbs.【21-speed disc brakes】The gear shift lever is equipped with a gear indicator for smooth shifting. Select the appropriate gear for different terrains. The mechanical dual disc brake system has a simple structure and is easy to maintain.【Front Fork+Shock Absorber】These all-terrain MTB feature shock-absorbing front and rear shock absorber. Dual shock absorbers provide double shock absorption effect, allowing you to ride smoothly and comfortably. The parallel bars can adapt to pressure road conditions.【24*2.125" All-Terrain Tires】Made of high quality rubber, all-terrain tires with strong puncture ressistance soften the bumps and stick to the Dirt, Trail, Gravel, Paved Path for a smooth, stable ride: strong grip, have a super excellent anti-skid function and is not easy to slip.【85% Pre-Assembled】The bike comes 85% pre-assembled. You need to assemble the handlebar, saddle, front wheel and pedals. After a short adjustment of the brakes and gears you can start riding immediately. Please note that if you have any questions, you could contact our customer service first.