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Finding the Right Fit : Bike Size Guide

Finding the Right Fit : Bike Size Guide

in Our Blog

Choosing the right size bike is key to your child’s comfort, confidence, and safety. At Kidching Bike Hub, we offer a curated range of Frog Bikes, known for their lightweight design and child-specific geometry. To make things easy, we’ve matched each model to your child’s inseam measurement, recommended age, and wheel size, so you can find the perfect fit.

Frog Bike Model

Beginner Minimum Inseam (cm)

Confident Minimum Inseam (cm)

Maximum Inseam (cm)

Recommended Age

Wheel Size

Frame Size

Balance Bikes

Tadpole Mini

24cm (10”)

23cm (9”)

30cm (12”)

1–2

10”

–

Tadpole

32cm (13”)

31cm (12”)

41cm (16”)

2–3

12”

–

Tadpole Plus

38cm (15”)

36cm (14”)

47cm (18”)

3–4

14”

–

First Pedal Bikes

Frog 38

38cm (15”)

36cm (14”)

41cm (16”)

3–4

14”

9”

Frog 44

44cm (17”)

40cm (16”)

53cm (21”)

4–5

16”

9.5”

Frog 47

47cm (18”)

43cm (17”)

59cm (23”)

4–6

18”

9.5”

Hybrid Bikes

Frog 53

53cm (21”)

50cm (20”)

65cm (26”)

5–7

20”

11”

Frog 61

61cm (24”)

57cm (22”)

74cm (29”)

8–10

24”

12”

Frog 67

67cm (26”)

63cm (25”)

76cm (30”)

10–12

26”

14”

Frog 74

74cm (29”)

69cm (27”)

91cm (36”)

12–14

26”

18”

City Bikes

Frog City 53

53cm (21”)

49cm (19”)

65cm (26”)

5–7

20”

11”

Frog City 61

61cm (24”)

57cm (22”)

74cm (29”)

8–10

24”

12”

Frog City 67

67cm (26”)

63cm (25”)

81cm (32”)

10–12

26”

14”

Balance Bikes are ideal for toddlers learning to balance on two wheels. The Tadpole Mini suits confident inseams from 23cm to 30cm, with a minimum beginner inseam of 24cm. It has 10” wheels and is best for ages 1 to 2. The Tadpole fits children with a 31cm to 41cm confident inseam, and a beginner inseam from 32cm, with 12” wheels for ages 2 to 3. The Tadpole Plus fits confident inseams from 36cm to 47cm, with a beginner inseam of 38cm, 14” wheels, and is perfect for ages 3 to 4.

First Pedal Bikes are for little ones ready to move beyond balance bikes. The Frog 38 is suited for confident inseams from 36cm to 41cm, with a beginner minimum of 38cm, a 14” wheel, and is ideal for ages 3 to 4. The Frog 44 fits confident inseams from 40cm to 53cm, with a beginner minimum of 44cm, a 16” wheel, and is best for ages 4 to 5. The Frog 47 supports confident inseams from 43cm to 59cm, with a beginner minimum of 47cm, using an 18” wheel and perfect for kids aged 4 to 6.

Hybrid Bikes are versatile and built for everyday adventures. The Frog 53 works for confident inseams between 50cm and 65cm, with a beginner minimum of 53cm, 20” wheels, and is great for ages 5 to 7. The Frog 61 supports confident inseams from 57cm to 74cm, with a beginner minimum of 61cm, a 24” wheel, and fits children aged 8 to 10. The Frog 67 fits confident inseams from 63cm to 76cm, with a beginner minimum of 67cm, using a 26” wheel for kids aged 10 to 12. The Frog 74 is for confident inseams from 69cm to 91cm, with a beginner minimum of 74cm, also using 26” wheels, and is best for ages 12 to 14.

City Bikes are designed for stylish everyday riding. The Frog City 53 fits confident inseams from 49cm to 65cm, with a beginner minimum of 53cm, using a 20” wheel and suitable for ages 5 to 7. The Frog City 61 supports confident inseams from 57cm to 74cm, with a beginner minimum of 61cm, a 24” wheel, and fits ages 8 to 10. The Frog City 67 suits confident inseams from 63cm to 81cm, with a beginner minimum of 67cm, 26” wheels, and is ideal for ages 10 to 12.

How to Measure InseamHave your child stand upright against a wall, place a book between their legs like a bike seat, and measure from the floor to the top of the book. This inseam measurement is your key to choosing the right size.

Still Unsure? No ProblemIf the bike isn’t quite the right fit when it arrives, we offer a 5-day exchange window, so you can swap it for the perfect size, quickly and easily.

At Kidching Bike Hub, we’re here to make riding simple, fun, and safe from the very first pedal. Use this guide to find your child’s ideal Frog Bike and enjoy the ride.

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