‘Hit the trail’ takes on a new meaning when you take an endo on a hard-charging downhill run -- protect your elbow and arm with the POC Bone Arm Protector. Three polypropylene segments backed with a ventilated comfort lining provide hard impact protection. The elbow area is further protected by flexible Visco-Elastic Polymer Dough (VPD), which stiffens on impact to provide superior shock absorption.