Vionic Tide II Sandals for Women – The Insole Store。May be unisex women size 8, mens size 7. Excellent support and traction make these sandals great for travel. Upper-Leather, Footbed-EVA, Outsole-durable rubber. Innovative podiatrist designed orthaheel technology provides superior orthotic support, relief and stability which helps realign the feet back to its natural position. Research supports Orthaheel Technology\'s success in reducing over-pronation, which can help relieve associated aches and pains such as heel pain (plantar fascitis), knee pain and lower back pain. Contoured footbed for addictive support. Orthaheel technology helps promote alignment from the ground up.