The progression of sizes in kids bikes goes up in 4" steps, The smallest is 12" followed by 16", 20" and then 24". The 20" range is generally suited to the age range between 5-7, but often last shorter children until they're  closer to the age of 9. 

An exception to this standard sizing comes from the brand BYK, which supplies14" and 18" …

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20 Malvern Star Livewire 3s 20 Malvern Star Livewire 3s

20 Malvern Star Livewire 3s

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20 Malvern Star Livewire 7s 20 Malvern Star Livewire 7s

20 Malvern Star Livewire 7s

$299.00 $249.00
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