Amazon.com: Vionic Women。Men\'s size 8 / womens size 10. EU 41. Durable thong sandal with premium upper materials. Designed with leather trim Patterned tread provides traction across a range of surfaces Lightweight, flexible EVA midsole absorbs shock, reducing stress on feet, ankles, and knees Durable TPR outsole with patterned tread helps improve traction The world\'s first orthotic sandal. Iconic support and style make it a best-selling favorite; meet your new comfy, contoured go-to. Designed with exclusive alignment technology to balance the whole you. Premium upper materials. Designed with leather trim. Patterned tread provides traction across a range of surfaces. Lightweight, flexible EVA midsole absorbs shock, reducing stress on feet, ankles, and knees. Durable TPR outsole with patterned tread helps improve traction. Built-in VIO MOTION Technology footbed featuring contoured arch support, with shock absorbing cushioning, deep heel cup to provide stability, and forefoot flexibility. Vionic Tide built-in orthotic is proven to treat heel pain caused by plantar fasciitis or achilles tendonitis. For optimal comfort, wear your new Vionic shoes for a few hours to let your feet adapt. Within 1-2 weeks, you should experience full orthotic comfort and support. Received (APMA) American Podiatric Medical Association Seal of Acceptance. 1.4 inch(es) heel height.