KinderBike 2014 Laufrad Run Bike Green Limited Lifetime Warranty - the best in the industry High-quality, lightweight aluminum components (not plastic like many cheaply made competitor knock-offs) Fully-adjustable bicycle saddle; adjusts up/down and angle adjustable for max comfort Fully-adjustable alloy handlebars; adjust up/down and forward/back Aluminum pneumatic wheels, bell, reflector, alloy quick-release included!