Propet Women's TravelBound Hi Athletic Shoes Red is a Precision knit mesh with a padded collar and tongue. Lace and inside zip for easy on/off. Arch-supporting high-density Open Cell PU foam allows air to flow for a cooler, healthier footbed. Thermally controlled rubber provides a long-lasting responsive cushion that keeps feet energized. Removable footbed, Flexible, Stretchable, Diabetic friendly pending.