Anytime you"re relying on distracted strangers to do the right thing in traffic, you"re flirting with disaster. The next time you bomb a hill on your longboard, protect yourself with a helmet and a pair of Sector 9 Gasket Knee Skate Pads. High density EVA foam displaces energy from an impact, so the pad takes the hit, not your knee. The hard shell protects against punctures and allows the pad to slide, making high-speed accidents less dangerous.