G-Form Pro-X3 Knee Guards
Best flexible protection for discreet under clothing wear.
These knee guards offer a clever balance of flexibility and protection, staying soft while pedaling and hardening instantly during a crash. They are an excellent choice for riders who want reliable armor that stays put without feeling bulky or restrictive.
$74.99
at
Sierra Cyclesmith
More Pro-X options
Who it's for
- Active individuals seeking comfortable, non-restrictive knee protection.
- Riders and athletes preferring discreet protection under their gear.
- Adventurous athletes needing reliable impact protection without stiffness.
Who should skip it
- Aggressive riders or those prioritizing extreme long-term fabric resilience.
- Downhill mountain bikers or extreme sports enthusiasts needing maximum hard-shell defense.
- Budget-conscious buyers or casual users seeking entry-level protection.
Performance breakdown
Impact absorption
SmartFlex technology hardens instantly upon impact for reliable, CE-certified protection.
Pedaling mobility
Flexible construction allows for a full, unhindered range of motion.
Breathability
Ventilated foam and moisture-wicking fabric keep legs cool during intense rides.
Fit security
Compression sleeves and integrated grippers keep pads locked firmly in place.
Maintenance ease
Machine washable design makes post-ride cleanup quick and completely effortless.
Weight profile
Lightweight build ensures you barely notice them while on the trail.
Key Specs
Weight
385.55 grams
Material
UPF 50+ fabric, SmartFlex pads, EVA foam
Impact Protection
CE 1621-1 Level 1
Closure Type
Slip-on
Ventilation
Integrated channels
Coverage Area
Knee
Anti-Slip Features
Top and bottom elastic grippers
Machine Washable
Yes
Flexibility Level
High
Intended Use
Mountain biking, BMX
Know before you buy
Still have a question?
Ask Metto anything about the G-Form Pro-X3 Knee Guards before you decide.
