10 Best Mountain Bike Knee Guards 2025 in the United States

The G-Form Pro-X3 Mountain Bike Knee Guards offer a solid combination of protection and comfort, making them suitable for serious mountain bikers. These guards feature advanced Smartflex technology, which provides reliable protection by hardening on impact, while the EVA comfort layer ensures they remain comfortable during long rides. The addition of UPF 50+ fabric adds an extra layer of protection from the sun and helps with moisture control, which is a significant benefit for outdoor enthusiasts.

The ventilated foam layer and moisture-wicking fabric help keep the knees cool and dry, making these guards comfortable to wear for extended periods. The product is also machine-washable, adding convenience in keeping them clean and fresh. However, despite these benefits, some users may find the compression fit to be too tight, particularly if not properly sized using the detailed sizing chart provided by the manufacturer.

The lightweight design (0.16 kilograms) enhances mobility, but it might not provide the same level of heavy-duty protection as bulkier options. The pull-on closure type is convenient but may not offer the same level of adjustability as strap-based designs. These guards are well-regarded in the biking community, though they might be best suited for those who prioritize comfort and mobility over maximum protection.

The G-Form Pro-Rugged 2 MTB Knee Guards offer a smart balance of protection and comfort for mountain bikers. Their standout feature is the SmartFlex technology, which stays flexible during movement but hardens instantly on impact, providing solid protection without restricting mobility. The double-knit compression fabric offers a snug yet comfortable fit that works well for both men and women, helping keep the pads securely in place without feeling bulky.

Made from durable polyester with a DuraTx outer layer, these guards resist tears and repel water, ensuring they hold up well on rough trails. Ventilation is thoughtfully addressed through mesh backs, which help keep your knees cool and dry during rides. The pull-on design with an adjustable strap further enhances fit customization. At about 0.44 kg per pair, they strike a good balance between protection and lightweight feel, avoiding the heaviness of some bulkier pads.

While the materials are durable, the pull-on style may be less convenient for some compared to pads with quick-release closures. Additionally, the fit can vary depending on body shape, so sizing carefully is important. These knee guards are best suited for riders seeking comfortable, flexible protection for trail riding or BMX, rather than extreme downhill racing where maximum hard-shell coverage might be preferred.

The POC Joint VPD Air Knee Pad is designed for mountain biking, offering a balance of protection, comfort, and mobility. Its standout feature is the VPD compound, which is lightweight yet effective in absorbing impacts, providing a high level of protection. The knee pads are reinforced with stretch fabric, ensuring they fit snugly without restricting movement.

The crash retention strap (CRS) enhances fit and ensures they stay in place during intense rides. The neoprene anti-slip material inside the pads adds to the comfort by preventing slippage. The low-profile design is practical, making them unobtrusive and easy to wear under clothing. While the ventilation could be better, ensuring more airflow for extended comfort, the pads still perform well in most conditions.

They are also quite lightweight, at only 0.05 kilograms, which adds to their appeal for long rides. The pull-on closure type is simple but might not be the most convenient for everyone. These knee pads are particularly suitable for adult mountain bikers looking for reliable protection without compromising mobility and comfort.