Kids' Bicycles

When choosing an appropriate bike for your child, you should always make sure it is the right size. The size is crucial for the child to be able to control the bike properly.

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The table below shows the values that will help you decide. Individual brands vary, so please consider the values in the table only as a guidance. To be sure, put the child astride above the top tube with the feet on the ground. The gap between the crotch and the tube frame should be about 5 cm. Always set the saddle height so that the child can reach the ground.

Also observe the correct seating position of the child. The child should not be stretching on the bike and handlebars should not be too high. The ideal height of the handlebars is at the waist level of the child. Underestimating these factors can lead to bad riding habits.

Children's bicycle sizes are numbered slightly differently than the ones for adults (seat tube length) and are measured according to the wheel diameter.

Size in inches (diameter)

Child's height in cm

Approximate age of the child

12 "

90-100

2-3 years

14 "

95-105

3-4 years

16 "

100-115

45 years

18 "

110-120

5-6 years

20 "

115-130

6-9 years

24 "

125-155

9-12 years

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204 Results
Joiride ultra light 24" medová/černá - Children's Bike
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2 colors 2 sizes
5.0 2×
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Joiride ultra light 24" medová/černá
Children's Bike - city bike 24" wheel from the age of 10 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 80kg
-10 % off new 303.90 € New 337.90 €
From 6.99 € per month
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As good as new - in stock 1 pcs
Order Code: SPTjoir011
Academy Grade 4 20-8S Microshift purple - Children's Bike
5 colors
5.0 5×
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Academy Grade 4 20-8S Microshift purple
Children's Bike - city bike 20" wheel from the age of 6 years, without suspension, aluminium frame
  489 €
From 11.25 € per month
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On the way > 5 pcs
Expected 06/11/2026
Order Code: SPTacd071
Olpran Vipera 20" mint/grey - Children's Bike
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Free
delivery
3 colors
5.0 1×
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Olpran Vipera 20" mint/grey
Children's Bike - mountain bike 20" wheel, full suspension, meant for recreational use, steel frame, frame size: S, pedals included, for children weighing up to 70kg
BLACK FRIDAY -26 % 174.90 € 239 €
From 4.02 € per month
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In stock
Order Code: SPTolp614
Yedoo Koolo 20 green - Children's Bike
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2 colors
4.5 2×
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Yedoo Koolo 20 green
Children's Bike - city bike 20" wheel, for boys from the age of 5 years, without suspension, meant for sports use, aluminium frame, with Plain theme, light weight, freewheel, pedals included and low Step, for children weighing up to 70kg
BLACK FRIDAY -30 % 276.90 € 399 €
Currently Unavailable
Order Code: SPTyed211
Academy Grade 3 16-1S Olive - Children's Bike
2 colors
5.0 9×
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Academy Grade 3 16-1S Olive
Children's Bike - city bike 16" wheel from the age of 4 years, without suspension, aluminium frame, for children weighing up to 30kg
  429 €
Currently Unavailable
Order Code: SPTacd001
Academy Grade 2 14-1S belt Yellow - Children's Bike
2 colors
5.0 1×
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Academy Grade 2 14-1S belt Yellow
Children's Bike - city bike 14 " wheel from the age of 3 years, without suspension, aluminium frame, frame height: 21mm, for children weighing up to 30kg
  399 €
Currently Unavailable
Order Code: SPTacd030
Academy Grade 4 20-8S Microshift Olive - Children's Bike
5 colors
5.0 5×
Watch Price/Availability
Academy Grade 4 20-8S Microshift Olive
Children's Bike - city bike 20" wheel from the age of 6 years, without suspension, aluminium frame, frame height: 290mm, pedals included, for children weighing up to 50kg
  489 €
Currently Unavailable
Order Code: SPTacd004
Academy Grade 2 14-1S belt Purple - Children's Bike
2 colors
5.0 1×
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Academy Grade 2 14-1S belt Purple
Children's Bike - city bike 14 " wheel from the age of 3 years, without suspension, aluminium frame, frame height: 21mm, for children weighing up to 30kg
  399 €
Currently Unavailable
Order Code: SPTacd029
Dino Bikes Flappy Girls bike 12" with accessories - Children's Bike
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Dino Bikes Flappy Girls bike 12" with accessories
Children's Bike - city bike 12" wheel, for girls, without suspension, steel frame, for children weighing up to 40kg
  87.87 €
Currently Unavailable
Order Code: SPTdin01
AUTHOR A-Matrix 24D 2026 12.5" White/Black/Blue - Children's Bike
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AUTHOR A-Matrix 24D 2026 12.5" White/Black/Blue
Children's Bike - city bike 24" wheel, spring fork and front suspension fork, meant for sports use, aluminium frame, frame height: 318mm, frame size: XS, light weight, with disc brakes, for children weighing up to 50kg, 2026 model
  504.09 €
Currently Unavailable
Order Code: SPTautko282
AUTHOR A-Matrix 24D 2026 12.5" Matt Green-Gold/Black/Lime - Children's Bike
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AUTHOR A-Matrix 24D 2026 12.5" Matt Green-Gold/Black/Lime
Children's Bike - city bike 24" wheel from the age of 8 years, spring fork and front suspension fork, meant for sports use, aluminium frame, frame height: 318mm, frame size: XS, light weight, with disc brakes, for children weighing up to 50kg, 2026 model
  504.09 €
Currently Unavailable
Order Code: SPTautko283
AUTHOR A-Matrix 24D 2026 12.5" Matte Titanium/Black/Red - Children's Bike
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AUTHOR A-Matrix 24D 2026 12.5" Matte Titanium/Black/Red
Children's Bike - city bike 24" wheel from the age of 8 years, spring fork and front suspension fork, meant for sports use, aluminium frame, frame height: 318mm, frame size: XS, light weight, with disc brakes, for children weighing up to 50kg, 2026 model
  504.09 €
Currently Unavailable
Order Code: SPTautko281
 

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In the category Kids' Bicycles on Alza.sk, we currently have a total of 204 products, which you can easily buy online and get quickly delivered. See all of your purchases and make orders on our easy-to-use app.
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