How to choose a kid’s bike
Woom bikes are sized by height and inside leg, not age alone. Children grow at different rates, so measuring the rider gives the most accurate fit.
How to measure inside leg
- Stand the child in socks against a wall
- Place a small book between their legs, as high as comfortable
- Measure from the top of the book to the floor (cm or inches)
Once you have the measurement, use the table below to find the correct Woom bike size. Woom bikes have long seatposts, so there is plenty of room for growth.
Visit WHEELBASE Lake District or WHEELBASE North East to view the full Woom range and get expert sizing support.
Woom Kids’ Bike Size Guide
Based on verified 2026 Woom sizing data from your open source.
| Woom Model | Minimum Inside Leg | Rider Height Range | Approx Age | Wheel Size |
|---|---|---|---|---|
| Woom 1 | 30–40 cm | 82–100 cm | 1.5–3 yrs | 12″ |
| Woom 1 Plus | 37–46 cm | 95–110 cm | 3–4.5 yrs | 14″ |
| Woom 2 | 37–46 cm | 95–110 cm | 3–4.5 yrs | 14″ |
| Woom 3 | 43–52 cm | 105–120 cm | 4–6 yrs | 16″ |
| Woom 4 | 50–59 cm | 115–130 cm | 6–8 yrs | 20″ |
| Woom 5 | 55–66 cm | 125–145 cm | 7–11 yrs | 24″ |
| Woom 6 | 63–76 cm | 140–165 cm | 10–14 yrs | 26″ |