Yvolution Y Velo Junior Toddler Bike The Yvolution Y Velo Junior Toddler Bike ($54, originally $60) is great for kids ages 18 months to 4 years old, and has a dual rear wheel for added stability that, as your child gets more confident, you can take one off, making it a true two-wheeler. Image Source: amazon.com Yvolution Y Velo Junior Toddler Bike $54 from amazon.com Buy Now