RYKA Women's Pria Running Shoe 100% Textile and Synthetic Imported Rubber sole Weight is 5.4 oz Upper is breathable mesh on the forefoot with supportive midfoot overlays and a lyrca bootie construction. Women Run The World Anatomical Precise-Return footbed. Compression molded EVA drop in provides heel to toe cushion. Flex-ology compression molded EVA provides flexibility from heel to toe. Rubber coverage in strategic high wear areas.