From Merrell, the Women's Haven Post Leather Thong Sandals feature: Full grain leather upper Slip on with adjustable buckled strap Synthetic lining Microfiber wrapped insole FloatMax™ Foam integrated insole for a soft and smooth underfoot experience FloatMax™ Foam midsole for a soft and smooth underfoot experience Merrell Quantum Grip™ durable rubber outsole that enables confidence in the most extreme trail environments Flat heel Imported.