Innovative CoolCheck Technology: The exterior of these containers changes color from blue to white, offering a quick visual cue to identify unsafe food temperatures, ensuring that your food remains at the ideal cooling level Long-Lasting Refrigerant Gel Filling: With refrigerant gel filling, these containers maintain food temperatures at or below the ServSafe guidelines of 40°F for up to 8 hours, provided they are frozen overnight. Keep your food fresh and safe for longer Fitted Lids for Temperature Control: Fitted lids are available to seal in the cool temperatures and keep environmental contaminants out. Your food stays at the perfect temperature, uncontaminated and ready for serving Mess-Free: Say goodbye to messy ice baths that create water puddles and dilute your food. These containers are a sanitary solution that maintains food safety without the mess Secure and Easy Transport: The wide rim provides an excellent grip, ensuring secure carrying and transport. Whether you're serving on-site or delivering, your food stays intact and in prime condition