One.7 skates incorporate 3D anaformable Surlyn made by Dupont into the quarter package. This means a durable, supportive, and lightweight boot that transfers energy to the ice better than other materials. The outsole features a full composite construction to keep the skate lightweight while still providing the stiffness required to efficiently transfer energy to the ice. This skate comes with Tuuk Lightspeed 2 holders with a Tuuk super stainless steel runners.