How do I measure my child's inseam?

Your child's inseam determines how far off the ground their heels will be while sitting on the Guardian Bike. This measurement adds  5% more accuracy when determining the correct bike size.
Confident riders on 16 inch & 20 inch small bikes can be on their tippy toes 2.5 inches, while less confident riders should be on their tippy toes max 0.50 - 1.50 inches.

Confident riders on 20 inch large & 24 inch bikes can be on their tippy toes 3 inches, while less confident riders should be on their tippy toes max 1-2 inches. 


Formula to calculate how far your child will be on their tippy toes:

(min seat height) - (inseam)

To Measure Inseam: 
1. Have your child stand tall, with their feet shoulder width apart (shoes on)
2. Place a book up between your child's legs as high as it can go (we want to measure to the point where they will be sitting on the seat; this is different than measuring pant inseam)

3. Measure from the ground to the top of the book to get their inseam measurement.

Min/Max Seat Heights:
16 inch =18.5 - 23.5 in
20 inch (small) = 20.8 - 26.8 in
20 inch (large) = 22.5 - 28.5 in
24 inch = 25 - 33 in


If you need any help with sizing, please don't hesitate to reach out to our team! We're happy to provide confident recommendations to ensure your child is comfortable. 

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