46.3% lighter than any of our other functional orthotics, the XP3™ is designed to help your most competitive patients conquer any athletic challenge and crush that which holds them back. Thin-profile and lightweight functional orthotic Ideal for athletic footwear, from running shoes to cleats, from hiking boots to spikes Super shock absorbent heel cushioning to reduce force impact Tested by athletes who push beyond the limits, the XP3 is proven to withstand the most extreme training programs and competitions.