Cycling will help your child develop leg muscles and strengthen their bones. The continued exercise will help build their stamina and improve their cardiovascular development. It will also increase their coordination and balance. Riding a bike is something all children should experience. Kids' bikes are sized by wheel diameter. Bike helmets and locks are also needed.

Here’s a guide: 

Age 4-5 years:  

Wheel diameter: 12-14 inches 

Child’s inseam: 14-20 inches 

Most of these smaller bikes come with training wheels. 

Age 6 years: 

Wheel diameter: 16 inches 

Child’s inseam: 18-21 inches 

Most of these bikes have coaster brakes; some have hand brakes. 

Age 7-8 years:

Wheel diameter: 20 inches 

Child’s inseam: 22-25 inches 

These can have more than one speed and have hand brakes. 

Ages 9 and up: 

Wheel diameter: 24 inches 

Child’s inseam: 26 inches or more 

These usually have the features of an adult bike.