Embossed ASYMMETRIC FLEX-CUFF delivers comfort Comfort foam conforms to your ankle Felt and lightweight HD foam lace-bite guard delivers comfort and forward flex Microfiber liner for quick drying and comfortable fit Comfort foam covers entire length of foot (inside and outside) MAX ARMOUR package provides protection and durability Anatomical Response HD footbed has a natural heel cup for comfort New CustomLite cowling features new ProProfile, Moisture Exhaust Vents, Butterfly Toe Shield, TriLites and a Replaceable Runner Proformance R30 runner delivers freedom of movement