The 70K skate was rebuilt from the ground up by leading biomechanics, using feedback from top NHL players. The result is the new FlexFrame technology, which offers top level forward flexion and lateral stability. The result provides players the most optimized skating stride. Other features on the 70K skate include a completely new heel lock design. The days of using the pump to achieve the customized fit in the heel are gone, and the contoured heel offers a high definition fit for all types of players. The Tritech pro tongue is a three layered 7mm felt tongue. It also contains HDPE foam and is molded to prevent lace bite, and offer pro level protection and comfort.