Soak evaporative cooling vests in cold water, and enjoy cooling relief and comfort. Mesh side panels offer improved ventilation and stretch. Features a V-neck with zipper closure, quilted nylon outer layer with an activated, polymer-embedded fabric inside. Water-repellent liner and black cotton-poly elastic trim. Reusable, just re-wet. Remains hydrated for up to 4 hours. Lightweight, durable and washable. 100% Nylon.