With the extreme comfort of the voinic tide ii sandal with orthaheel technology the world is your oyster. Orthaheel technology is biomechanically designed to support your arches and heels for all-day comfort. Great for those with plantar fasciitis heel stress, the tide ii's built-in orthotics have been shown to reduce heel pain in a peer-reviewed clinical study. Additionally, the lightweight, flexible, medium-density eva midsole absorbs shock and reduces stress, while the tpr rubber outsole provides traction. A simple woven and leather upper strap and toe post ensure your sandals stay put. Fun colors and patterns make the tide ii perfect for any warm weather adventure. Features: orthaheel technology built-in heel orthotic lightweight flexible eva midsole tpr rubber outsole leather/woven upper straps and toe post american podiatric medical association seal of approval. Vionic natural alignment.