We set out to design a trainer suitable for the youngest of riders: Mission accomplished! The E Series will get your child riding earlier than any other trainer on the market. Engineered with an extremely low center of gravity to prevent accidental tip-overs, the E Series offer the lowest saddle height available (11"). Plus, at just 5.9 lbs, it is absolutely the lightest trainer on the market - making it incredibly safe and maneuverable. The E Series trainer also comes with quick-release collars on both the handlebar and saddle - allowing parents to quickly and easily customize the size to their toddler.