Includes BOTH the Rocking Base and 12 Sport 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 Sport 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 helps build core strength. They will hit development milestones and learn to ride early (without training wheels!).Easy, no stress assembly with all tools included so the toolbox can keep collecting dust in the shed.The All-Weather, Durable Plastic Rocking Base stays steady and strong while your baby learns balance and coordination.The Easy-Adjust Clamps make adjusting the seat and handlebars for your growing kiddo almost too easy.The Ergonomically-Padded Seat gives your little one some extra cush for their tush, even post diapers.The Mini-Grips fit toddler’s tiny little hands perfectly.