X25^TM open cell foam in the removable anti-microbial Ortholite^® insole Propét’s “Tour Knit Slide” has high levels of cushioning in thin layers to reduce foot shock Breathable precision-knit uppers with padded tongue and elasticized lacings stretch to embrace the foot A lightweight EVA midsole has rubber tread inserts for durability and traction Women’s sizes 6-10, 11, 12 and 13 in 4E only