JMMD Size & Fit Guide
Find the Right Ride for Your Child
Compare JMMD toddler bikes and trikes by age, riding stage, storage needs, and family use. Start with the right fit before choosing a color.
Quick Match
Choose by your main use case
If two models fit your childβs age, choose by how your family will actually use the ride most often.
Age is the starting point, not the whole decision.
Compare Without Scrolling
JMMD model fit matrix
A quick side-by-side view of age range, parent control, canopy, and storage fit.
S900
Age: 18Mβ5Y
Best for: Balance + bike progression
Parent push: Yes
Canopy: No
Storage: Compact frame
B56
Age: 1β5Y
Best for: Family outings
Parent push: Yes
Canopy: Yes
Storage: Easier storage between outings
A7
Age: 1β5Y
Best for: Folding + growth modes
Parent push: Yes
Canopy: Yes
Storage: Best compact fold
B31
Age: 1β5Y
Best for: Starter trike
Parent push: Yes
Canopy: Yes
Storage: Non-folding frame
For early guided rides
Choose B56, A7, or B31 if your child still needs a seated trike setup, parent steering, and closer adult control.
For active skill building
Choose S900 if your child is ready to practice balance, steering, pedaling, and independent riding confidence.
For storage pressure
Choose A7 if apartment storage, car loading, or taking the trike along is a major purchase reason.
Fit Check
Before you buy, check the child and the use case.
Children grow at different speeds. Age helps narrow the choice, but comfort, reach, confidence, and supervision are just as important.
Seat comfort
The child should sit steadily in the intended mode.
Handlebar reach
Hands should reach naturally without over-stretching.
Foot position
Check pedals, footrest, or ground contact depending on the mode.
Supervision
Always follow the product manual and supervise children during use.
Size & Fit FAQ
What age are JMMD rides suitable for?
S900 is designed for ages 18Mβ5Y. A7, B56, and B31 are positioned for ages 1β5. Please check the product page and updated manual for the model you choose.
Should I choose by age or riding ability?
Use age as a starting point, then consider your child's height, balance, confidence, and whether they still need parent-guided riding.
Which JMMD ride is best for an 18-month-old?
S900 is the main 18Mβ5Y model. If your family wants more stroller-style support, compare B56, A7, and B31 based on the child's size, riding stage, and need for parent control.
Which model is best for small spaces?
A7 is the strongest compact-storage choice because folding and storage are its core use case.
Which model is best for learning balance and pedaling?
S900 is the best fit if your main goal is balance practice, pedal progression, and helping your child move toward more independent riding.




