As a player, I like to go with how I feel. If I feel like I look good, I’ll be more confident and play well. As a scientist, I only care about the data. I put these to the test in a 5-10-5 drill and a 10 meter sprint. Unfortunately, I don’t have automated timing systems and did not do a thorough study (multiple reiterations, placebo insoles, etc) but from a few sets of each drill was able to compare using the insoles and not using the insoles to find my speed increased slightly in each test! Carbon fibers “have several advantages including high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion. These properties have made carbon fiber very popular in aerospace, civil engineering, military, and motorsports, along with other competition sports. However, they are relatively expensive when compared with similar fibers, such as glass fibers or plastic fibers.”

I bought these and im 6"1 without shoes. before vktry insoles I was grabbing 10" and couldnt dunk but after I bought the insoles and the ankle strap I was dunking consistently, this is such a good and underated product worth the price Although running on clouds sounds nice, cushioning can have a greater negative effect than positive. Whereas, carbon fiber, although rigid, promotes healthier energy transfer from ground to leg.My son was experiencing some knee pain. After a physical therapist recommended insoles I began looking for the best I could for him. Let me say VKTRY insoles did not disappoint! You will experience faster sprint times, more explosive movement, and less injuries with VKTRY Performance Normal insoles are primarily made of cellulose paperboard, a flimsy, sometimes spongy or cushioned foam-like material.

I have been wearing custom VKTRY insoles since 2019, to help fix my pronating and prevent ankle injuries. I haven’t had any ankle or feet problems since wearing my VKTRY insoles. Before wearing VKTRY I ran 100 meters in 12.3 seconds, with VKTRY insoles I’m now able to run 100 meters in 11.1 seconds. As a rising HS Sophomore, my PR is a 36” vertical and 4.61 sec. 40 yard dash. This is all possible with VKTRY insoles. Carbon fiber in footwear is nothing new and is now being used heavily by brands like Nike, especially when it comes to performance running. The insoles are comfortable and seem to increase my daughter's vertical. She bought the Velcro braces to help hold them in place and said they are really needed to help with comfort, but she is no longer able to wear her ankle brace (they do not double up well) - This helps prevent her from rolling her ankle while playing volleyball. She did end up rolling her ankle just today, so she will have to discontinue using them until the sprain heals and muscle memory of the movement. over 10 years. He invented VKs to help the team increase their explosiveness at the start of the race.In 2005, our founder Matt Arciuolo began working as the Certified Pedorthist for the USA Olympic Bobsled and Skeleton teams. He developed the VKTRY Performance Insole to help our Olympic athletes gain a more explosive start – and ultimately to win more races.