Columbia Cross Train 21-Speed, 700C Woman's Hybrid Bicycle Manufactured from quality aluminum for long-lasting durability Featuring upright geometrics both the saddle (seat) and the style of this bicycle are built for comfort and ease Designed with aluminum rims and a high-tensile steel suspension fork to maximize stability and control Equipped with back and front alloy V-brakes (direct-pull rim brakes) and a Shimano 21 speed RAPIDFIRE gear shifter Finished off with a steal kickstand and traditional Columbia embossed saddle and hand grips