【Product Features】 ★【Sturdy High Carbon Steel Frame for Durability】This mountain bike is constructed with a high carbon steel frame, ensuring long-lasting strength and durability to handle tough terrains and daily commuting. ★【Reliable Disc Brakes for Safe and Precise Stopping】Equipped with powerful disc brakes, this bike provides consistent, responsive braking for a safer ride, whether you're commuting through the city or enjoying a weekend adventure. ★【Stylish Brown Edge Tires for Enhanced Design】Featuring distinctive brown edge tires, this bike combines style and functionality, providing excellent traction while adding a unique touch to its appearance. ★【Built to Withstand Daily Use】With its durable construction and stylish design, this mountain bike is ready to handle the demands of daily use, whether you're riding on city streets or exploring outdoor trails. ★【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. 【Description】 [24-Inch Mountain Bike] Frame: Carbon Steel; 15" Height Frame Brake: Dual Disc Brakes Shifter: Trigger Shifter Derailleur: Shimano 21-speed Colors: Green; Black-Red Rider Height: Suitable for 48"-5'6 (56-66 inches) [26-Inch Mountain Bike] Frame: Carbon Steel; 16" Height Frame Brake: Dual U-Brakes Shifter: Twist shifter Derailleur: 21-speed Colors: Green; Blue Rider Height: Suitable for 5'4"-6'2" (64-74 inches) [27.5-Inch Mountain Bike] Frame: Carbon Steel; 17.5" Height Frame Brake: Dual Disc Brakes Shifter: Trigger Shifter Derailleur: Shimano 21-speed Colors: Green; Black-Red Rider Height: Suitable for 5'4"-6'2" (64-74 inches) 【Product Information】 ★Bike Type:mountian bike ★Age Range Description:fits height 5'3"-5'9" (162-180cm) ★Frame Material Type:Carbon Steel ★Handlebar Type:Flat Handlebar ★Bike Shift Levers:Shifter Lever with Gear Indicator ★Suspension Type:Front ★Brake Style:Disc ★Speeds:21 speeds ★Rim Material:aluminum alloy ★Included Components:toolkits，Assembly Instructions，reflector ★Wheel Size:27*2.125 ★Frame dimensions (seat tube clamp to wheel center axis length):17.5 inch ★load-bearing:250lb ★Tire Type:Clincher 【Maintenance&Notice】 ★Outdoor Furniture Care:To remove dirt and debris, vacuum with a dust- brush attachment or use a dry paintbrush. Clean with a mild soap solution, scrub with a sponge, rinse with cold water and dry completely. When outdoor furniture is not in use, we recommend covering all the furniture to protect it against the elements. ★Assembly Notice:Please read assemble manual in advance. Please do not over-tighten nuts, as this may cause distortion or break 【Notes】 1.Size Notice:Manual measurement has been used, there may be some reasonable errort, thanks for your understanding. 2.Color Notice:Due to factors such as display equipment and shooting environment, the color of the item may be slightly different from the picture, which is a normal phenomenon, please refer to the actual item 3.Assembly Notice:Please read assemble manual in advance. Please do not over-tighten nuts, as this may cause distortion or breakage. 4.It is recommended to put a layer of foam or soft cushion on the floor when installing to avoid scratching the floor. 5.If the item has any defects, damage or missing parts, please contact us with pictures or videos so that we can understand your needs and help you quickly, and always remember to retain its original packaging to ensure any return requests. We will try our best to solve any problems you may have. 6.If you receive the wrong product, please attach the product picture, the infographic of the outer package and the picture containing SKUs, so that we can verify and quickly deal with it for you