Women’s Slide Sandal with Tri-planar Motion Control Orthaheel technology EVA footbed. Recycled non-slip rubber outsole with “First Ray Compression Zone”. Soft Nubuck leather upper and liner. All Weil Integrative Footwear styles feature the revolutionary AMS "Aided Motion Control" system, Orthaheel's Tri-Planar Motion Control system, and a first ray flexor zone. These three systems combine to provide easier movement, greater endurance and energy, and improved posture.