Top Rated Aluminum Road Bike with Shimano Shifting, Galaxy SC1 Commuter Bike / Racer by Cycles Mercier Lightweight, Durable, Aluminum Frames with Comfy Upright Riding Position Comfort Padded Saddles, Strong Side Caliper Brakes Smooth Shifting Shimano Shifters, Easy Reach Stem Mounted Lightweight, Durable Aluminum Rim Wheels Great Beginner to Sport Level. SIZING GUIDE: XS 42cm fits most 4'11"-5'2" | Sml 46cm fits most 5'3"-5'6" | Med 50cm fits most 5'7"-5'9" | Lrg 54cm fits most 5'9"-6' | XLG 58cm fits most 6'-6'3"