A thin layer of Bunheads gel is incorporated into the construction of the sole patches, alleviating pressure and providing shock absorption. Four-way stretch, breathable Nylon Lycra Spandex upper. Patented ExoArmor duet sole patches move independently. Pads are securely sewn with stitching both on the edge and interior. Concealed elastic keeps footUndeez firmly in place without pinching or color breaks.