Frog Fit Technology

Either download the FrogFit App in the App store for Apple or Android or use the chart below. See the information below for measuring inside leg and arm length.

Fitting Your Child

Sizing a child the Frog way!

Frog bikes take sizing a child very seriously. This is one of the most important factors for cycling success and enjoyment.

Unlike many kids' bikes, Frog bikes are sized based on leg length rather than age, since this is the most reliable way to find the right size bike for each child. Children are unique and come in all shapes and sizes, growing at different times, so age alone isn’t a reliable measure.

FIND YOUR FIT

In many cases, wheel size and age are used as methods to select a child's bike, but this is not accurate; you need to measure the inseam of the child's legs. This will ensure that your child is able to place their feet on the ground safely and comfortably.

We recommend taking the time to measure the rider’s inside leg by following these simple steps:

  1. Stand the child in socks against a wall.
  2. Place a small book between their legs, as high as is comfortable.
  3. Ask the child to move away and measure from the top of the book to the floor.
  4. Once you have measured the inside leg, use the table below to find the right size of bike for your child.
  5. Now use the chart below or if you downloaded the app, measure your child's arm length from the top of the arm to the tip of the middle finger.       
*Please turn phone horizontally to see the chart more clearly. 
    Current Models Tentative Rider
    Min.
    Inseam
    Confident Rider
    Min.
    Inseam
    Confident Rider
    Max
    Inseam

    Approx age

    Wheel
    Size
    Frame
    Size
    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" -
    Frog 40 40cm (16") 36cm (14") 46cm (18") 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"
    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 73 73cm (29") 67cm (26") 81cm (32") 12-14 26" 16"
    Frog 78 78cm (31") 72cm (28") 88cm (35") 13+  26"  18" 
    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" 
    Frog Road 58 / Track 58 58cm (23") 52cm (20") 63cm (25") 6-7 20" 11"
    Frog Road 67 / Track 67 67cm (26") 62cm (24") 74cm (29") 8-12 24" 14"
    Frog Road 70 / Track 70 70cm (28") 67cm (26") 84cm (33") 11-14 26" 17"
    Frog MTB 62 62cm (24") 58cm (23") 70cm (28") 8-10 24" 12.5" 
    Frog MTB 69 69cm (27") 63cm (25") 75cm (30") 10-12 26" 15"
    Frog MTB 72 72cm (28") 66cm (26")  85cm (33") 12+ 26"  16"
    WHAT ELSE SHOULD I CONSIDER?

    Stand over height and saddle height should also be factored into finding the right size bike for your child. This will ensure that your child can stand comfortably over the top tube (cross bar) of the bike and be able to touch the ground when seated on the bike allowing them to stop and start without toppling off.

    FIND THE RIGHT BIKE

    We recommend purchasing your Frog bike from your local Frog dealer, who will build the bike for you and ensure it fits your child properly.

    Your local Frog Bikes dealer will have many of our bikes available for the rider to sit on in-store. You will get help and advice on sizing, and receive ongoing service, as well as support. 

    Two Wheeling Tots Video on how to measure inseam is a great video: https://youtu.be/RXuvO6uaU4Y