• 50% Nylon/50% Polyester sport towel • Latex-free, lightweight, soft, breathable • When wet, towel cools for up to 2 hours; when dry it absorbs sweat. • To activate: 1 - soak towel, 2 - ring out excess water, 3 - snap to activate (to reactivate, re-soak, re-ring and re-snap).