Vionic Alta Women's Toe Post Orthotic Sandals. Comfy Sandals. Vionic footwear is stylish and comfortable and incorporates a podiatrist designed biomechanical footbed for support. Features & Benefits of the Vionic Alta Women's Toe Post Orthotic Sandals Women's Whole & Half Sizes Widths: MED MIRAGE ALTA PSTL LPRD SANDAL MAIN MATERIAL: Leather FOOTBED LINING: Uncovered EVA OUTSOLE CONTENT: Rubber Vio-Motion Support is an innovative approach to foot health: Vionic conceals biomechanical technology into each shoe. All-day comfort is a difference you can feel. Deep heel cup provides essential stability. Contoured orthotic footbed for addictive support and cushioning for comfort. Vio-Motion is designed to provide you with proper alignment, which can help reduce common aches and pains by aligning you from the ground up.