About this item 20×4-inch Wider Tires — Ecarpat kids’ bicycle tires are made of high-quality rubber, which is highly puncture-resistant and wear-resistant, suitable for a variety of different terrains. Width 4 inches, 5 times more wear resistance than ordinary bicycle tires. allowing children to ride happily in a safe condition! Durable Frame and Superior Shock Absorbing — The frame is made of strong and durable high-carbon steel, ensuring the stability and safety of children while riding. The thickened outer wall of the front fork can better absorb bumps to protect children’s wrists from injury and bring a better riding experience. Superior Safety System — Equipped with Dual Disc brake, allows for more precise and controlled braking. This braking design comes with precise stopping power and is strong enough for kids to tackle different terrains and have better control over the bike. And equipped with front and rear reflectors, ensuring kid’s riding safety in dark situations. Rugged Frame – The frames of these mountain bikes are made of high carbon steel for strong support strength. Ergonomically designed, wear-resistant and corrosion-resistant, they provide a safe and reliable travel solution. 85% Pre-Assembled – The bike comes 85% pre-assembled. You just need to assemble the front wheel, handlebars, and pedals with included tools. After a short adjustment of the brakes and gears, you can start riding immediately.