Xelero Tru Trek Active Sandal (Women) - Black/Grey/Light BlueTRU True Recovery Underfoot is the only recovery sandal on the market with technology designed to offer a perfect balance of support and cushioning. The EVA contoured footbed supports the heel, foot and arch. The X2 Technology limits forefoot flexion and provides a smooth transition at toe off. Xelero Motion Control Technology keeps the foot in alignment throughout the gait cycle resulting in less stress for the foot, ankle, hips, and lower back.