Product Information Bike Type road bike Height range description fits height 5'3"-5'9" Frame Material Type Carbon Steel Handlebar Type Flat Handlebar Bike Shift Levers Shifter Lever with Gear Indicator Suspension Type no Brake Style Disc Speeds 21 speeds Rim Material aluminum alloy Included Components toolkits，Assembly Instructions，reflector Wheel Size 700cx35 Frame dimensions (seat tube clamp to wheel center axis length) 16.5 inch load-bearing 250lb Tire Type Clincher【Enhanced Stability and Comfort】Equipped with wide 700C x 35mm tires, this road bike offers superior stability and a comfortable ride, making it perfect for daily urban commutes and student travel.【Durable Aluminum Alloy Construction】Built with high-quality aluminum alloy wheels, this bike ensures longevity and resilience against daily wear and tear, providing a reliable transportation solution.【Smooth and Responsive Braking】Featuring disc brakes, the bike delivers consistent and responsive braking performance, enhancing safety during your rides in various weather conditions.【Versatile 21-Speed Gear System】The 21-speed gear system allows for easy adaptation to different terrains and riding conditions, ensuring a smooth and efficient cycling experience.【 Designed for All Riders】With its unisex design, this road bike caters to both male and female riders, offering a practical and stylish solution for students and daily commuters alike.