The ECARPAT Fat Tire Bike is equipped with 7-speed Shimano shifters and 4.0 width wheels to improve the rideability on slushy snowy roads in winter. Choose a fat tire bike for your kids and enjoy the outdoor sports in the winter snow! 【Sturdy Kids Bikes】Ecarpat Kids’ Bicycles are suitable for ages 6-10 or a rider height of 4′-5′(48-60 inches). High-tensile carban steel fat tire kid’s bike frame that’s ready to hit the trail, high strength for kids to control; Ergonomically step-throuhg design, provide a safe and smooth ride. 【7-speed Drivetrain】Allows riders to switch gears with smoothness. The positioning is accurate, and silky gear shifts without stalling. The riders can select gears for various terrains quickly. 【Double Disc Double Safety】 Mechanical disc brake system with 160mm rotors front and rear ensures safety. Both front and rear provide great stopping power, greatly reduce the braking distance and ensure that you can stop immediately in case of emergency. 【20*4.0″ Wide Tires】Feature 100mm front suspension fork. The thickened outer wall is more resistant to shocks. The thickened shock absorbers help absorb shocks. The parallel bars can adapt to pressure road conditions; Wheels up to 23 inches, 5 times more wear resistance than ordinary bicycle tires. Strong grip and anti-slip, Fully capable of challenging any terrain, can conquer any off-road trails, city roads, beaches and snow. 【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.