[Steel Mountain Bike Suspension Frame] - The Mountain Bike's 26x17 inch modern design steel frame allows for ultimate bump absorption, making it the perfect bike for a smooth ride on mountain roads, forest paths and highways. [Great Braking System] - The Elecony Mountain Bike has simple yet sophisticated mechanical disc brakes that allow for more precise and controlled braking. Mechanical disc brakes are more effective than rim brakes, helping to keep you safer when riding at high speeds, down mechanical disc brakes are more effective than rim brakes, helping to keep you safer when riding at high speeds, down slopes and in wet and slippery conditions. [Excellent transmission]- The Mountain Bike has a Shimano shift handle with the Classic 21 speeds. The front and rear derailleurs allow you to quickly and smoothly change gears to suit a variety of terrains. [26-inch Unique tire] - The Elecony Mountain Bike's tires are made of high-quality rubber and have strong puncture and abrasion resistance. This makes it the perfect bike for a variety of riding experiences, from rides in the mountains to rides on city streets. [15% Assembly Required]- The Elecony Mountain Bike arrives 85% assembled and includes free pedals and assembly tools. bike can be fully assembled with ease with the help of tutorial videos, and we are more than happy to help with any problems you may have during the assembly process.