Ripping down flowing singletrack and blistering downhill courses is stupidly fun, but it doesn't come without consequences when you bail off your bike or fall at high speeds. Engineered to soften the blow from crashes, the POC Joint VPD 2. 0 Knee Guard protects your knees from impact when you're trail riding and slaying downhill courses. The 3D-molded VPD foam stays pliable when you're riding, stiffening upon impact to absorb the punishment of crashes and trail mishaps. Its perforated design keeps you cool when you're riding, helping to prevent sweat build-up on hot summer rides. Plus, you'll find an elasticized hook-and-loop strap for a secure, adjustable fit. Note that these pads are slim enough to wear under your favorite trail shorts and riding pants.