Huffy 24” Rock Creek: Hardtail Mountain Bike Ideal for male teen ages 13 to Adult FEATURE: 18-speed bike's twist shifting system with Shimano rear derailleur delivers consistent response for uphill and downhill rides. Frame and Fork: Hardtail frame and front suspension fork combine for a responsive ride. Speeds: 18-speed mountain bike has consistent twist shifting Brakes: Front and rear linear pull brakes provide consistent, dependable control. Seat: Padded saddle, with durable stitching, can be easily adjusted to the right height. Rims: Lightweight aluminum rims improve performance. Grips: Kraton grips provide a performance style and comfort feel. Quick Seat Adjustment: Quick-release binder clip makes it easy to adjust the seat as needed. Pedals: ATB resin mountain bike pedals have just the right amount of grip.