Always Waterproof. The Tidal Waterproof lace up sneaker from Vessi are their most active waterproof style, created with maximum cushioning for a feeling of rebound in every step. Designed to take you from point A to point B and back again. Vessi's patented Dyma-tex waterproof technology is a material engineered with 4 soft and flexible layers that combine to keep your feet dry and comfortable all day long.