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, is 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.