Diamondback Bicycles 2016 Women's Vital 2 Complete Hybrid Bike 6061-T6 aluminum frame with Sport Hybrid Geometry for more upright pedaling position is built to last Step through frame design makes getting on and off the bike a breeze Suspension fork and seat post for added cushioning Shimano 21-speed drivetrain provides wide range of gears 700c road wheels are efficient and smooth rolling