TUNED HIGH REBOUND EVA FOAM- 60 durometer rebound EVA foot bed. ANATOMICAL NYLON PLATE Maintains flexibility & range of motion. Durable. Resistant to cracking & compression 3.0cm ARCH HEIGHT Designed to fit broad range of arched feet. CK MESH TOP COVER WITH ANTI-MICROBIAL EVA Abrasion-resistant material Inhibits bacteria growth & foot odor. LIGHTWEIGHT