Breathable, Abrasion Resistant Polyester Mesh upper with TPU welded overlays,Molded TPU toe bumper,Molded heel overlay,Moisture wicking & breathable air mesh lining,Aluminum safety toe,Metal free nail penetration protection,Ortholite Footbed - lightweight, breathable & provides long lasting cushioning & moisture management,XL EXTRALIGHT Outsole with HellyGrip Rubber pods is lightweight & durable while offering outstanding cushioning.,Safety Midsole: Non-Metallic Puncture Resistant Plate made out of many layers of textile that are stacked in a criss cross pattern, layered with glue and pressed together, Chelsea Evolution