CCM Jet Speed FT390 Hockey Skate features a ROCKETFRAME Composite Quarter Package that is a 3D-lasted lightweight composite boot with pro ergonomic shape that aims to provide excellent heel lock and speed generation. Tapered Fit around the foot. The FT390 features Speedcore3, which is a super lightweight, rigid, and thermo-formable core. The TOTALDRI Pro liner with durazone abrasion protection is a high performance moisture-wicking material that keeps feet dry and your skates light. Smooth Contour Pro comfort pad provides foot and ankle comfort. Symmetrical multi-density memory foam wraps around the foot for a custom fit and comfort. TRITECH Tongue with Molded Lace-Bite Protection mods to players feet and high ankles to enhance & protect against lace-bite. A Lightweight composite midsole enhances the energy transfer platform for the blade-to-boot interface. An extra stiff carbon composite outsole with exhaust system offers torsional rigidity to maximize your energy transfer. Air system footbed is equipped with aeration vents to keep feet dry. Speedblade 4.0 provides an increased attack angle to provide greater strides & optimal cornering. A Speedblade Hyperglide runner provides players with greater glide efficiency and a longer edge life.