Alpinestars SX-1 Plasma Knee Guards — L/XL, Black

🛡️ The PLASMA knee protector is embedded in a highly ventilated semi-rigid frame that delivers superior impact protection while minimizing heat build-up.

Constructed from a biobased viscoelastic material, the protector offers multi-directional pliability to mold to the knee and dissipate impact energy for reliable protection.

Dual density co-injected frames provide support and comfort, featuring scooped upper and lower extensions that prevent pressure points from boots and avoid digging into the skin.

Controlled natural movement is achieved via the Dual Gear System (DGS), where integrated gear profiles on both frames create a smooth hinge that follows the knee’s articulation. ⚙️

Ergonomically sculpted frames combine rigid and flexible over-injected shells to adapt to a wide range of leg sizes while maintaining a secure fit.

The patella system offers full coverage of the knee cup across degrees of extension and the rigid outer shell helps protect against direct strikes.

Construction highlights include extensive protective coverage, lightweight high-performance polymers for flexibility and strength, and a slim ergonomic profile with a dual strap closure and snap-fit buckles for a personalized secure fit.

Protection rating: EN 1621-1:2012 Level 1.

Materials: 50% acrylonitrile-butadiene-styrene, 15% polyurethane, 12% polyamide, 9% ethylene-vinyl acetate, 7% polyester, 4% other, 3% thermoplastic polyurethane.