Breathable mesh upper made from 100% recycled PET with synthetic overlays Gusseted tongue Iconic molded TPU construction Molded TPU toe cap for durability and protection Molded EVA sockliner with 100% recycled PET topsheet Molded single-density EVA midsole Injection-molded TPU insert Non-marking VIBRAM® XS Trek rubber outsoles for the perfect combination of traction and durabilityComposition: 100% PET