Economy: Neo Foam pads and DuPont Engage® EVA provide cushion and shock protection. • DuPont Engage® EVA foam mid layer • Shock dispersing NeoFoam forefoot and heel pads • Perfor-Air™ Ventilation System • Three-quarter length EVA Resin Base layer • Agion™ Antimicrobial treatment • Nylex brushed nylon foot surface