3D AnaFromable ALIVE composite upper is heat moldable for superior comfort and fit Clarino synthetic liner resists moisture absorbtion Exterior 3D injected heel cup provides superior heel support and comfort Lightweight insta-form+ foam ankle pads provide serior comfort in the ankle area Molded, anatomical forward tongue with high-density metatarsal guard Anatomical power channel footbed for superior comfort and instant energy transfer Full composite texalium outsole is lightweight, extremely supportive and abrasion resistant Tuuk Lightspeed 2 blade holder with Lightspeed 2.1 power solid stainless steel runner