Radio Flyer Ultimate All-Terrain Stroll’N Trike, Kids and Toddler Tricycle, Red. BRAND NEW IN BOX. This vintage Radio Flyer tricycle is sure to bring joy to any child’s outdoor playtime. With four sturdy wheels and a 6V battery, this tricycle is built to last for years of adventure. It’s suitable for both boys and girls between the ages of 9 months and 5 years, and will provide hours of entertainment for children at the age level of 3-4 years. This classic tricycle is perfect for outdoor play and is a great addition to any child’s toy collection. Take a step back in time with this 1970s ride-on, which is ideal for those who appreciate vintage toys.