Cool Vest for Instant Cooling with Plastic Bottles Can be worn as an inner or outer layer. Washable for hygiene. Cooling duration: approximately 3 to 4 hours The product itself has no noticeable scratches, but the box has some dirt and damage. Please check the photos for details. - Product Name: Cool Vest - Set Contents: Vest body, battery, charging cord - Size: Free Size - How to Use: Cools using frozen plastic bottles - Features: Instant cooling function Thank you for viewing.