VKTRY Performance Insoles are the first insole proven to help athletes run faster and jump higher - while also helping reduce injuries. Aerospace grade carbon fiber insoles in a patented shape help athletes produce more ground force, resulting in +8.1% max force and +9.3% rate of force development on average. VKTRY Insoles come in 5 degrees of flexibility based on athlete weight to optimize both performance and stability. The added support and stability of VKs helps to reduce injuries like turf toe, plantar fasciitis, stress fractures, etc. Four major NCAA football programs participated in a test wearing VKTRY Insoles in 2017 and saw athlete's foot injuries decrease an average of 41%. In just over a year on the market, over 120 NCAA and Pro teams have joined Team VKTRY. Here's what they're saying: "Combining performance & protection, the VK is simply the best insole I have seen in my 32 year NBA career." - Gary Vitti, Head Athletic Trainer, Los Angeles Lakers "I was skeptical at first, but since using VKs, I have seen a very noticeable improvement in my ability to explode and drive power from my feet to my legs" - George Springer, MLB All-Star Center Fielder VKs represent a quantum leap in the world of performance insoles providing many of the benefits of custom made orthotics in an over the counter device. For the first time, athletes can experience stabilization, shock absorption, and propulsion in a device that is specifically tailored to their size and weight. This is a game changer. - Dr. James Creps, PT, DScPT, OCS, CMPT, Senior Physical Therapist, Boston Red Sox Learn more at www.vktrygear.com Read our customer reviews at https://www.trustpilot.com/review/vktrygear.com