Teva - Gamma LTR (Mocha) - Men's: High performance Teva DNA wrapped in classic materials. The Gamma leather picks up where the river ends. Waterproof suede upper. Soft internal EVA midsole. Rugged River Rubber outsole provides a versatile non-slip rubber compound best suited for use in and around the water. Excellent grip on smooth surfaces such as rock, fiberglass and raft rubber.