-Removable auxiliary wheels to meet the needs of kids at different stages of growth-Height of the seat cushion can be adjusted between 24.5"-29.5"-2 removable auxiliary wheels can help form a stable triangle structure-It includes a front caliper brake and a rear brake to improve safety-Sturdy carbon steel frame can support up to 110lbs-Premium and durable material to ensure long service life-Detachable basket can help children store some daily items-Splash guard can prevent muddy water from splashing on the child's clothes-Reflector ensures the safety of children when riding in dim light-It has two 18" wear-resistant and non-slip tires for various roads-Non-slip pedals and ergonomic handle with bell provide more convenience-Complete and detailed assembly instructions help you quickly get a complete bike-Help children learn riding skills in a funny way and gradually master balance