Compare: 2021 B'TWIN Rockrider ST 500 Kids' 24-Inch Mountain Bike 9-12 Years vs Rockrider ST 100 Kids' 20-Inch 6-9 Years Mountain Bike vs Rockrider ST 120 20" Kids Mountain Bike Ages 6-9
Rockrider ST500 26” Wheel - Mountain Bike for 9 to 12 yrs old – Decathlon Brand - First ride ST-500 - YouTube