In as short as 25 to 35 minutes, the product becomes activated with water and ice. The best way to stay cool is to rotate around your neck every five to ten minutes. The inner water will evaporate as you use the item. Your event team will have a cool event thanks to this reusable cooling scarf. You can choose from the color's orange, yellow, red, white, or blue. Our other product links state that this item is reusable and can be personalized with your own wording. With the help of this reusable cooling scarf, your event workers will have a comfortable experience.