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Gold VKs are the world’s first sports insole made from 100% aerospace-grade carbon fiber, providing exceptional strength and flexibility while remaining ultra-lightweight. Every pair of VKs is customized to the athlete's sport, gender, and weight to ensure unparalleled stability, comfort, and a perfect fit for enhanced athletic performance. Independent testing shows that on average, athletes wearing VKs see 1.6-inch higher vertical jumps, 0.12-second faster 40-yard dash times, and a 9.3% increase in overall explosiveness. Designed for all non-cleated shoes, Gold VKs also help athletes to protect against, and recover faster from, common foot and lower leg injuries. Studies show that athletes wearing VKs experience 41% fewer foot and toe injuries and 22% fewer lower leg injuries. Studies also show that wearing VKs reduces the risk of, and helps in the recovery from, ACL injuries, MCL injuries, Meniscus tears, Bursitis, Tendinitis, Osteoarthritis, shin splints, tibial stress syndrome, stress fractures, anterior tibialis tendinitis, turf toe, and plantar fasciitis.