Lightweight and capable: Wahoo's aluminium frame is strong and durable, but still light enough that it's easy for kids to control;Closed dropouts with Trek's proprietary ThruSkew, a safety feature that ensures that the wheels will never drop out unintentionally;A simple 1x8 drivetrain simplifies shifting so kids can focus on having fun!;You shouldn't buy your kid's bike where you buy your cereal - Unlike big box brands, Trek kids' bikes are assembled by people who know bikes;