G-Form Pro-X3 Mountain Bike Knee Guards, Triple Matte Black — Size L, SmartFlex Impact Pads, Breathable

G-Form Pro-X3 Mountain Bike Knee Guards are flexible compression sleeves with SmartFlex impact pads that stay soft while riding and stiffen instantly on impact for breathable, low-profile knee protection.

Built for trail riders who want lightweight, no-fuss protection, the Pro-X3 combines a slim compression fit with ventilated impact foam and moisture-wicking fabric. These knee guards are designed to move with you, offering a balance of freedom and coverage for cross-country, enduro, or aggressive trail days. The triple matte black finish keeps a low visual profile while durable materials and machine-washable construction simplify post-ride care.

How does SmartFlex protection perform while pedaling and on a crash?

The proprietary SmartFlex material stays soft and pliable during normal motion, so you retain full knee mobility while climbing or sprinting. On sudden impact the pad stiffens to absorb and disperse force, reducing shock to the joint without bulky hard shells.

• Soft, flexible at rest for complete range of motion
• Rapid hardening on impact to spread force over a larger area
• Low-profile shape that fits under shorts or overpants

Will these knee guards stay in place during long rides and rough terrain?

Yes—Pro-X3 uses a compression sleeve with top and bottom grippers to minimize slippage and maintain targeted coverage through climbs, descents, and technical sections. The snug fit reduces bunching and helps keep the impact foam aligned with the knee.

• Compression fit designed for secure contact with the skin
• Silicone or elastic grippers at cuff edges to prevent migration
• Sizes mapped to a detailed chart for optimal fit and stability

How comfortable and breathable are these knee pads for multi-hour use?

Comfort is prioritized through ventilated foam and moisture-wicking fabric that move sweat away from skin and help regulate temperature. The inner foam is soft against the knee, while the exterior fabric provides UPF 50+ coverage for sunny rides.

• Ventilated foam layer improves airflow and cooling
• Moisture-wicking fabric reduces clamminess and chafing
• UPF 50+ fabric offers sun protection on exposed sections

How easy are these knee guards to maintain and travel with?

Pro-X3 guards are machine washable and dry quickly, making them convenient for daily use or multi-day trips. Their slim, flexible construction packs small in a backpack and won’t add significant weight to your kit.

• Machine-washable construction for simple cleaning
• Water-resistant outer fabric sheds light moisture and dirt
• Low bulk for easy storage in a pack or jersey pocket

Who is this for: The G-Form Pro-X3 Mountain Bike Knee Guards suit riders who want advanced, unobtrusive protection without sacrificing mobility—ideal for mountain bikers from weekend trail riders to competitive racers who prefer minimal bulk. Choose these if you value breathable materials, easy care, and a secure compression fit that stays out of the way while providing impact protection when it matters.

Features:

• Compression design for a snug, supportive fit—refer to the sizing chart for best results
• Ventilated foam and moisture-wicking fabric for cooler, drier rides
• Machine-washable knee pad sleeves for low-maintenance care
• UPF 50+ outer fabric providing sun protection and moisture control
• G-Form SmartFlex technology for flexible movement and impact hardening