mbai and yellow are from different factories, they are different on dimensions and details, it means you noted this if you order.

US size might not right, please buy according to kids height.

18M=tag80     for kids around 75cm tall

24M=tag90     for kids around 85cm tall

3T=tag100     for kids around 95cm tall

4T=tag110     for kids around 105cm tall

6T=tag120     for kids around 115cm tall

8T=tag130     for kids around 125cm tall