Merrell Tetrex Water Shoes Perform in water and over land in this hikable watershoe! With self-draining Hydramorph technology, the Tetrex ensures that your feet get dry as quickly as possible. Antimicrobial technology fights off unwanted odors from excess moisture, and a removable and recyclable insole can be cleaned separately and gives you a bit more versatility. An elastic cord and lock lacing system provides a quick and secure fit, and a stretch collar ensures easy on/off. EVA midsole for stability and comfort. Synthetic uppers/rubber outsoles. Imported.