Four Sizes Available: 14 in for ages 3-5 (35.4-38 in tall), 16 in for ages 4-7 (38-42 in tall), 18 in for ages 5-8 (42-48 in tall), and 20 in for ages 7-13 (48-60 in tall). Note: Children of the same age may vary in height, so please consider height when choosing a size. | Vevor | | Kids Bike, 20 in Children Bicycle, with Kickstand BMX Style for Boys Girls Ages 7-13, Adjustable Seat & Handlebar | Blue | Best Buy