CCM Tacks AS-550 Senior Ice Hockey Skates 3D Injected Boot Quarter Package: Ergonomic boot-shaping system for great comfort and new texturized finish for improved durability Stiffness 115: Solid core for great skating performance HD Microfiber: High resistance to wear while delivering major comfort and durability Felt Tongue: 5mm felt tongue with added foam for increased comfort and protection CCM Footbed: Provides support and comfort CCM Speedblade: Non-replaceable stainless steel blade with elevated holder for an increased attack angle