Technology DurableErgonomics and Science Design unique insole design also offers stronger arch support, longer life and greater comfort ALL DAY long. AVOID cheaper alternatives that just dont last, offer no support or comfort and can cause more foot pain Dual Layer CushioningConstructed with grade dual-layer EVA foam and PU cushioning ,Targeted and controlled cushioning with a soft, supportive feel AND provides maximum cushioning for running and jumping and other sports activities. High Quality FabricThe insoles are made of breathable fabric, that guarantees your feet stay cool, dry and comfort by sucking up all the sweat produced by your feet during strenuous activity, meanwhile ensures healthier for your feet. U-heel DesignProvide feet stability. Keep feet bone vertical and balance.Reduce the friction between the feet and shoes.