Stay Cool and Comfortable with COOLPAX Phase Change Cooling Vests by Saurya Safety. COOLPAX cooling vests are designed for ultimate temperature regulation, perfect for high-temperature work environments. Using advanced Phase Change Cooling Materials (PCM) sealed in polyurethane, these vests offer consistent cooling without freezer burn, condensation, or fluctuating temperatures. Features: Advanced Cooling Technology: Utilizes PCM for targeted temperature control. Durable and Long-lasting: PCM lasts longer than water-based vests. Comfortable in All Conditions: Ideal for humid environments and under heavy protective gear. Lightweight Design: PCM is 70% the weight of water, making the vest approximately 5.5 lbs. Easy to Use: Simply freeze the inserts for about 35 minutes, place them in the vest pockets, and wear the vest for immediate cooling relief. How to Use: Freeze the cooling inserts in the freezer for approximately 35 minutes. Place the solid inserts into the vest pockets. Wear the vest and enjoy a consistent 14°C cooling effect. Don't suffer in the heat, stay cool with CoolPax! Perfect for anyone needing reliable cooling solutions.