17 inch. Like new condition. Only ridden couple times. Features

　　Lightweight aluminum frame features comfortable geometry and an angle-adjustable stem for riders of all sizes

　　RST suspension fork helps smooth out bumpy roads, reducing rider fatigue

　　TruVativ crankset provides a solid foundation for the reliable 21-speed drivetrain

　　Easy-to-use SRAM twist shifting allows your hands to remain in a comfortable and secure position while shifting

　　Tektro linear pull brakes offer excellent speed control and reliable stopping power

　　Equipped with a Velo Comfort seat and a Post Modern suspension seat post, this baby is more comfortable than your favorite easy chair