VKTRY Gear makes the "World's Best Performance Insole". While most insoles are simply made from foam and plastic, the VKTRY Insole is highly unique because of the product design and material. "VKs" are made from aerospace-grade carbon fiber which runs from heel to toe and provides energy return to athletes. Because of the full length carbon fiber, VKs also provide added stability, support and protection which reduces the chance of injuries.