Chill-Its 6668 Safety Cooling Vest, Large, High Visibility Lime-YellowPolymer embedded cooling technology quickly activates for up to four hours of relief from the heat ANSI ISEA 107, Type R Class 2 compliant with 2" reflective tape for low light visibility Lightweight and breathable mesh bottom reduces weight, enhances airflow and prevents excess water from dripping onto clothing Soak in water for 2 5 minutes to activate Water repellent lining helps keep wearers dry Loops along neckline designed to hold cooling towels