-Designed with a safe dual brake system - a hand brake and rear coaster brake -Includes double-using methods - with training wheels or without training wheels-2 removable training wheels consist of a triangular structure for stability-22.5"-25" adjustable seat fits kids of different ages and heights-Quick release lever helps you to adjust or fix the seat height-Our 95% pre-assembled bike with tools included is quick to assemble-The high carbon steel frame for great strength and sturdiness-The an