I got my daughter a new bike today. She had been riding a Trek Mystic with 16-inch wheels, which we got a few years ago and knew she had totally outgrown... But when she and I went to the local bike store, they told us she was already too big for 20-inch wheels too! So she skipped an entire size of bike. In fact, she was almost big enough for full-sized women's bikes with 26-inch wheels. Her new ride is a Trek Mt. Track 220 with 24-inch wheels, 21 speeds, hand brakes, front shock absorbers and an aluminum frame, which Trek markets as a bike for the 9-12 age group. (Yes, she just turned... eight .) We had been looking at the MT220 with a purple "girls" frame, but unfortunately the bike store sold the only one they had. She was sad for a little bit, but then remembered that she is a tomboy, and decided that a black bike with a "boys" frame was certainly cooler and better than no new bike at all. (I pointed out afterward that her mom'