G-Form Youth Pro vs Leatt 3DF Youth Knee Pad
Two of the most popular youth MTB knee pads - the soft, sleeve-style G-Form Pro versus the harder-shell Leatt 3DF. Certification level, fit feel, and how aggressively your kid actually rides decide which one to buy.
- Certification: CE EN1621-1 Level 1
- Foam: RPT (Reactive Protective Technology)
- Construction: soft compression sleeve with reactive pads
- Breathability: excellent moisture-wicking
- Shell fabric: 82% nylon, 18% spandex
Sizing: Size YM fits 30-35 cm thigh circumference, 140-160 cm rider height.
MSRP: $70-90 · Amazon ~$69.99
- Certification: CE EN1621-1 Level 2
- Foam: 3DF impact foam
- Construction: hard-shell cup + 3D sleeve
- Breathability: moisture-wicking mesh
- Materials: silicone + foam
Sizing: Size YS fits 28-33 cm thigh circumference, 140-160 cm rider height.
MSRP: $85-110 · Amazon ~$65.00
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Side-by-side spec sheet
| Aspect | G-Form Youth Pro Knee Pad | Leatt 3DF Youth Knee Guard | Winner |
|---|---|---|---|
| CE rating | EN1621-1 Level 1 | EN1621-1 Level 2 | Knee Guard |
| Construction | Soft sleeve, reactive pads | Hard-shell cup + 3D sleeve | Knee Guard |
| Pedalling comfort | Disappears on the bike | Noticeable on long climbs | Knee Pad |
| Breathability | Excellent | Good | Knee Pad |
| Slide-out abrasion resistance | Limited (sleeve fabric) | High (hard cup) | Knee Guard |
| Best use | Flow trails, pump track, XC | Enduro, jumps, rock gardens | Tie |
| Amazon price | $69.99 | $65.00 | Knee Guard |
The verdict
Pick the G-Form Youth Pro for kids on flow trails, pump tracks, and bike-park lift days where comfort matters more than crash-rating numbers - the soft RPT pads stiffen on impact but disappear while pedalling. Pick the Leatt 3DF Youth if your kid is hitting drops, rock gardens, or proper enduro - the hard-shell cup plus CE Level 2 foam is the higher-protection rating and survives slide-out crashes much better.
Best value
Leatt 3DF Youth - CE Level 2 protection at a slightly lower Amazon price than the G-Form sleeve.
Best performance
Leatt 3DF Youth - Level 2 certification and the hard cup absorb harder impacts than the G-Form's soft RPT pads.
Not sure which knee & elbow pads fits you?
Our sizing guides and category pages help you narrow the field.