Introduce the Strider Rocking Base early to help boost your baby&';s confidence. Designed for children aged six months old and up, the Strider Rocking Base is built with a wide and stable base. Starting young encourages children to figure out where to hold on, how to make their bike move, and most importantly, how to have fun! No batteries. No annoying sounds. Just pure, rocking fun. First, your baby will start to explore by crawling around the base and playing with the wheels. Second, they&';ll develop all the skills needed to enjoy the excitement of riding a bike, including gross motor skills, spatial awareness, core strength, and balance. Third, your little rider will safely rock and play on their bike even if they&';re not walking yet. Lastly, we made it easy to remove and reattach the Rocking Base on demand, so your kiddo steers the show. Watch as they discover the thrill of balance and coordination - all while feeling secure on two wheels. This awesome bike accessory is the ultimate way to kickstart your kiddo&';s biking journey. Compatible with most Strider 12 Models, excluding the Strider 12 ST-R and older versions of Strider 12 Models. With the Strider Rocking Base attached, this product is intended for ages 6 months - 2 years old for Strider 12 Sport, 12 Pro, and 12 Classic riders. Bike sold separately.