【Front and Rear Dual Shock Absorption System】Equipped with both front fork and rear shock absorbers, effectively reducing road vibrations and enhancing riding comfort, suitable for various terrains. 【Efficient 21-Speed Gear System】The 21-speed gear system allows riders to easily adjust the speed for different terrains and needs, improving the overall riding experience. 【Sturdy and Durable Design】Built with a high-strength steel frame, ensuring stability and durability on various terrains, perfect for long-term use. 【Reliable Disc Brake System】Features a disc brake system that provides strong braking performance, ensuring safety under various weather and terrain conditions. 【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.