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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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246 Results
Academy Grade 3 Edition - FUNtasy Blue - Children's Bike
2 colors
Academy Grade 3 Edition - FUNtasy Blue
Children's Bike - children's bike 16" wheel from the age of 4 years, without suspension, aluminium frame
439 €
From 10.41 € per month
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In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTacd092
AUTHOR Cosmic 20 2025 10" Black/Orange - Children's Bike
AUTHOR Cosmic 20 2025 10" Black/Orange
Children's Bike - children's bike 20" wheel from the age of 4 years, without suspension, meant for recreational use, aluminium frame, frame height: 254mm, frame size: XS, light weight, for children weighing up to 30kg, 2025 model
New arrival 335.89 €
From 7.97 € per month
Buy
In stock 3 pcs
Order Code: SPTautko273
Yedoo Koolo 16 pink - Children's Bike
4 colors
Yedoo Koolo 16 pink
Children's Bike - children's bike 16" wheel, for girls from the age of 3 years, without suspension, meant for recreational use, aluminium frame, with Without theme theme, light weight, freewheel, pedals included and low Step, for children weighing up to 50kg
359 €
From 8.51 € per month
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTyed208
Volare Wish 12", purple CB - Children's Bike
7 variants
Volare Wish 12", purple CB
Children's Bike - children's bike 12" wheel, for girls from the age of 2 years, without suspension, meant for recreational use, steel frame, for beginners, balance wheels and mudguard, for children weighing up to 60kg
105.10 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTxacr763
ACADEMY S-GRADE Trail 4 Amber - Children's Bike Free delivery
to Alza branch
ACADEMY S-GRADE Trail 4 Amber
Children's Bike - trail bike 20" wheel from the age of 6 years, front suspension fork, meant for sports use, aluminium frame, frame height: 240mm, with Without theme theme, for children weighing up to 70kg
949 €
From 22.51 € per month
Buy
In stock 3 pcs
Order Code: SPTacd103
Academy Grade 6 26-7S Nexus belt Purple - Children's Bike
6 colors
Academy Grade 6 26-7S Nexus belt Purple
Children's Bike - children's bike 26" wheel from the age of 10 years, without suspension, aluminium frame
734.90 €
From 17.43 € per month
Buy
In stock 1 pcs
Order Code: SPTacd053
Joiride ultra light 14" medová/černá - Children's Bike Free
delivery
3 colors 4 sizes
Joiride ultra light 14" medová/černá
Children's Bike - children's bike 14 " wheel from the age of 3 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included and balance wheels, for children weighing up to 50kg
309 €
From 7.33 € per month
Buy
In stock > 5 pcs
Order Code: SPTjoir002
Joiride ultra light 16" medová/černá - Children's Bike Free
delivery
3 colors 4 sizes
Joiride ultra light 16" medová/černá
Children's Bike - children's bike 16" wheel from the age of 5 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 50kg
329 €
From 7.80 € per month
Buy
In stock > 5 pcs
Order Code: SPTjoir005
Joiride ultra light 20" petrolejová/mátová - Children's Bike Free
delivery
3 colors 4 sizes
Joiride ultra light 20" petrolejová/mátová
Children's Bike - children's bike 20" wheel from the age of 7 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 65kg
409 €
From 9.70 € per month
Buy
In stock > 5 pcs
Order Code: SPTjoir007
Academy Grade 4 20-7S Nexus belt green - Children's Bike
5 colors
5.0 2×
Academy Grade 4 20-7S Nexus belt green
Children's Bike - children's bike 20" wheel from the age of 6 years, without suspension, aluminium frame
669 €
From 15.87 € per month
Buy
In stock 3 pcs
Order Code: SPTacd073
Academy Grade 4 20-7S Nexus belt blue - Children's Bike
5 colors
5.0 2×
Academy Grade 4 20-7S Nexus belt blue
Children's Bike - children's bike 20" wheel from the age of 6 years, without suspension, aluminium frame
669 €
From 15.87 € per month
Buy
In stock 3 pcs
Order Code: SPTacd074
Yedoo Koolo 20 green - Children's Bike
4 colors
5.0 1×
Yedoo Koolo 20 green
Children's Bike - children's bike 20" wheel, for boys from the age of 5 years, without suspension, meant for sports use, aluminium frame, with Without theme theme, light weight, freewheel, pedals included and low Step, for children weighing up to 70kg
449 €
From 10.65 € per month
Buy
In stock 4 pcs
Order Code: SPTyed211
Dino Bikes R88 16" - Children's Bike
4.6 21×
Dino Bikes R88 16"
Children's Bike - children's bike 16" wheel from the age of 5 years, without suspension, meant for recreational use, steel frame, freewheel, balance wheels, mudguard and low Step, for children weighing up to 45kg
-4 % off new 121.90 € New 127.90 €
Buy
Unsealed - in stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTdino010
ACADEMY S-GRADE Gravel 5 Garnet - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Gravel 5 Garnet
Children's Bike - gravel bike 24" wheel from the age of 7 years, front suspension fork, aluminium frame
New arrival 879 €
From 20.85 € per month
Buy
In stock 1 pcs
Order Code: SPTacd112
Joiride ultra light 24" medová/černá - Children's Bike Free
delivery
3 colors 4 sizes
Joiride ultra light 24" medová/černá
Children's Bike - children's 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
469 €
From 11.12 € per month
Buy
In stock > 5 pcs
Order Code: SPTjoir011
Joiride ultra light 20" medová/černá - Children's Bike Free
delivery
3 colors 4 sizes
Joiride ultra light 20" medová/černá
Children's Bike - children's bike 20" wheel from the age of 7 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 65kg
409 €
From 9.70 € per month
Buy
In stock > 5 pcs
Order Code: SPTjoir008
Joiride ultra light 14" petrolejová/mátová - Children's Bike Free
delivery
3 colors 4 sizes
Joiride ultra light 14" petrolejová/mátová
Children's Bike - children's bike 14 " wheel from the age of 3 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included and balance wheels, for children weighing up to 50kg
309 €
From 7.33 € per month
Buy
In stock > 5 pcs
Order Code: SPTjoir001
Yedoo Koolo 16 blue - Children's Bike
4 colors
Yedoo Koolo 16 blue
Children's Bike - children's bike 16" wheel, for boys from the age of 3 years, without suspension, meant for recreational use, aluminium frame, with Without theme theme, light weight, freewheel, for beginners, pedals included and low Step, for children weighing up to 50kg
359 €
From 8.51 € per month
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTyed206
Yedoo Koolo 16 green - Children's Bike
4 colors
Yedoo Koolo 16 green
Children's Bike - children's bike 16" wheel, for boys from the age of 3 years, without suspension, meant for recreational use, aluminium frame, with Without theme theme, light weight, freewheel, for beginners, pedals included and low Step, for children weighing up to 50kg
359 €
From 8.51 € per month
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTyed207
ACADEMY S-GRADE Pump 6 Plum - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Pump 6 Plum
Children's Bike - Dirt jump bike 26" wheel from the age of 10 years, front suspension fork, aluminium frame
899 €
From 21.32 € per month
Buy
In stock 1 pcs
Order Code: SPTacd119
ACADEMY S-GRADE Trail 4 R Space - Children's Bike
2 colors
ACADEMY S-GRADE Trail 4 R Space
Children's Bike - trail bike from the age of 6 years, front suspension fork, aluminium frame
New arrival 799 €
From 18.95 € per month
Buy
In stock 1 pcs
Order Code: SPTacd122
ACADEMY S-GRADE Pump 6 Frost - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Pump 6 Frost
Children's Bike - Dirt jump bike 26" wheel from the age of 10 years, front suspension fork, aluminium frame
New arrival 899 €
From 21.32 € per month
Buy
In stock 1 pcs
Order Code: SPTacd120
ACADEMY S-GRADE Pump 5 Frost - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Pump 5 Frost
Children's Bike - Dirt jump bike 24" wheel from the age of 7 years, front suspension fork, aluminium frame
849 €
From 20.13 € per month
Buy
In stock 1 pcs
Order Code: SPTacd118
ACADEMY S-GRADE Pump 5 Plum - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Pump 5 Plum
Children's Bike - Dirt jump bike 24" wheel from the age of 7 years, front suspension fork, aluminium frame
849 €
From 20.13 € per month
Buy
In stock 1 pcs
Order Code: SPTacd117
 

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In the category Kids' Bicycles on Alza.sk, we currently have a total of 246 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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