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Knee & Elbow Pads

G-Form Pro-X3 Youth vs Leatt 3DF 5.0 Jr Knee Pad

Two of the most popular youth MTB knee pads - the soft, sleeve-style G-Form Pro-X3 versus the hard-cup Leatt 3DF 5.0 Jr. Both are CE Level 1, so construction, fit feel, and how aggressively your kid rides decide which one to buy.

G-Form Youth Pro Knee Pad
Option A
G-Form Youth Pro Knee Pad
G Form · Knee
  • 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: Youth L/XL fits roughly 30-35 cm thigh circumference, 140-160 cm rider height.
MSRP: $70-90 · Amazon ~$69.99
Leatt 3DF 5.0 Jr Knee Guard
Option B
Leatt 3DF 5.0 Jr Knee Guard
Leatt · Knee
  • Certification: CE EN1621-1 Level 1
  • Foam: 3DF impact foam
  • Construction: hard-shell cup + 3D sleeve
  • Breathability: moisture-wicking mesh
  • Materials: silicone + foam
Sizing: Junior S/M suits roughly 130-150 cm riders, L/XL roughly 150-165 cm.
MSRP: $70-90 · Amazon ~$80.01

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Side-by-side spec sheet

CE ratingTie
G-Form Youth Pro Knee PadEN1621-1 Level 1
Leatt 3DF 5.0 Jr Knee GuardEN1621-1 Level 1
ConstructionKnee Guard
G-Form Youth Pro Knee PadSoft sleeve, reactive pads
Leatt 3DF 5.0 Jr Knee GuardHard-shell cup + 3D sleeve
Pedalling comfortKnee Pad
G-Form Youth Pro Knee PadDisappears on the bike
Leatt 3DF 5.0 Jr Knee GuardNoticeable on long climbs
BreathabilityKnee Pad
G-Form Youth Pro Knee PadExcellent
Leatt 3DF 5.0 Jr Knee GuardGood
Slide-out abrasion resistanceKnee Guard
G-Form Youth Pro Knee PadLimited (sleeve fabric)
Leatt 3DF 5.0 Jr Knee GuardHigh (hard cup)
Best useTie
G-Form Youth Pro Knee PadFlow trails, pump track, XC
Leatt 3DF 5.0 Jr Knee GuardEnduro, jumps, rock gardens
Amazon priceKnee Pad
G-Form Youth Pro Knee Pad$69.99
Leatt 3DF 5.0 Jr Knee Guard$80.01

The verdict

Pick the G-Form Pro-X3 Youth for kids on flow trails, pump tracks, and bike-park lift days where comfort matters most - the soft RPT pads stiffen on impact but disappear while pedalling, and they are the cheaper of the two. Pick the Leatt 3DF 5.0 Jr if your kid is hitting drops and rock gardens: both pads carry the same CE Level 1 rating, but the Leatt adds a hard outer cup that survives slide-out crashes far better than a fabric sleeve.

Best value

G-Form Pro-X3 Youth - same CE Level 1 rating as the Leatt for about $10 less, and kids actually keep it on.

Best performance

Leatt 3DF 5.0 Jr - the hard outer cup spreads impact and resists abrasion better than the G-Form sleeve in slide-out crashes.

Not sure which knee & elbow pads fits you?

Our sizing guides and category pages help you narrow the field.