Vionic Agave Thong Sandals Size 7.5 Black Leather Excellent used condition. I wore them twice. Super chic, comfortable and cute. Great arch support. Downsizing my closet. Vionic Agave Women's Comfort Toe Post Sandal. A generously cut strap lends a modern look and added comfort to this streamlined silhouette that's perfect for day-to-night wear. Style Type: Thong. Toe Shape: Open Toe. Uppers: Leather or Suede. Features of Vionic Agave Women's Comfort Toe Post Sandal Uppers: Leather Footbed Lining: Mad-Made. Heel Height:.75". Biomechanically designed to hug your arches, Vionic Technology helps support natural alignment from the ground up.