RYKA Women's Devo Plus 2 Walking Shoe 100% Mesh/Synthetic Imported Synthetic sole Weighs 8.3 oz Breathable mesh upper with supportive synthetic overlays Anatomical precise-return footbed Lightweight molded eva outsole features a full length rezorb platform; external pod network between midsole and outsole, and full length internal insert Eight-piece radiused skeletal rubber works simultaneously with the re-zorb midsole and cobblestone engineering