Includes BOTH the Rocking Base and 12 Pro Balance Bike and is recommended for ages 6 months to 5 years. Your baby will learn to rock, and as soon as they’re ready to walk, they’ll be ready to roll. All on the same bike.The Rocking Base holds the 12 Pro securely and drops stand-over height, so even the shortest of chubby baby legs can put their feet down and rock. Fit babies to toddlers with inseam from 22 cm (8.75 in.) - 51 cm (20 in.). This set up will see them through plenty of growth spurts.The best way to teach your baby balance, coordination, and builds core strength. They will hit development milestones and learn to ride early (without training wheels!).The 12 Pro has an ultralight, aluminum frame that weighs in at a mere 2.5 kg (5.6 lbs.) and makes this bike optimally proportional for a toddler’s size and weight, yet durable enough to handle kid-level abuse.Easy, no stress assembly with all tools included so the toolbox can keep collecting dust in the shed.The Learn-to-Rock Guide comes with every purchase and gives step-by-step advice to help your baby go from rocking to rolling through the neighborhood.