I ride an early 90's steel Trek 720 hybrid with 28 tires. I got kevlar tires because I got tired of fixing flats. They work--I haven't had a flat since I got the new tires. It's a "women's" bike with a step through frame. That comes in handy because it's hard to haul my leg up and over two fully loaded grocery bag panniers. It's got a rack with a built in bungee cord, which is handy when I haul a cake in to the office.