Two of the highest-rated kids bike lines on the market. The Specialized Jett uses a Rider-First Engineered approach with proportional components for each wheel size, while the Woom Original is the European original of the modern lightweight kids bike movement, with proven kid-specific geometry and color-coded brake levers.
$420 - $720
Best for: Active kids who will ride frequently across pavement and easy dirt
$400 - $600
Best for: Lightest possible kids bike with kid-specific everything
| Aspect | Specialized Jett | Woom Woom Original |
|---|---|---|
| Stack (16" / Woom 3) | 415mm | 425mm |
| Reach (16" / Woom 3) | 232mm | 235mm |
| Approximate Weight (20") | ~17.5 lbs | ~16.5 lbs ✓ |
| Sizing Granularity | 5 sizes (12"–24") | 6 sizes (Woom 1–6) ✓ |
| Purchase Channel | Local Specialized dealer ✓ | Direct-to-consumer (online) |
| Resale Value | Strong | Excellent (highest in class) ✓ |
| Entry Price (20") | $520 | $520 |
| Measurement | Specialized Jett | Woom Woom Original | ||||
|---|---|---|---|---|---|---|
| Size | 16" | 20" | 24" | 16" (Woom 3) | 20" (Woom 4) | 24" (Woom 5) |
| Stack (mm) | 415 | 480 | 535 | 425 | 485 | 540 |
| Reach (mm) | 232 | 272 | 312 | 235 | 275 | 315 |
Geometry numbers are within 5–10mm at every wheel size, with Woom running fractionally taller in stack. Woom's sizing is more granular (six sizes vs Specialized's five), which helps when a child is between traditional wheel-size jumps. Both bikes can be sized accurately by child height alone - the brand's published height range is reliable for either.
Choose the Woom Original if absolute lightest weight matters most - Woom is genuinely the lightest mainstream kids bike at every wheel size and the weight difference is meaningful for young riders. Choose the Specialized Jett if you want to test-ride at a dealer, value local service, or your child is between Woom sizes; the Jett's slightly heavier weight is offset by professional fit support and the Rider-First Engineered approach.
Woom Original - lighter weight and kid-specific component scaling reduce fatigue for young riders
Woom Original - weight advantage is decisive for kids learning to ride uphill and accelerate
Available now from our partner retailers.

Woom
12-inch balance bike for ages 9 to 36 months (height 27"-39"). No-pedal design with a 6 lb aluminum frame, self-centering steering, and silent gliding wheels. Saddle 10.5". Includes a Buddy plush toy.

Woom
12-inch balance bike for toddlers 18 months to 3.5 years (inseam 10.0"-14.4", height 31"-40"). Weighs 6.4 lbs. Saddle 10.4"-14.4". Hand brake teaches early stopping; steering limiter prevents oversteering.
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