Used for a week size 6 shoes Kinetic Fit™ Base insoles, contoured like your foot. Kinetic Fit™ insoles provide flexible, intuitive support for connected and protected movement. FEATURES • Intuitive shape • Absolute arch coverage • Advanced heel lock • Recycled EVA • Odor control • Mesh liner • Available in whole sizes, trim to fit for half sizes The packaging said that the Eva insole retains its performance 90% after 2 years insole so definitely a lot of life left in these