Bio-Based Coolant: Utilizes bio-based PCM phase change thermostat material, ensuring safe, skin-friendly cooling without risk of frostbite. Quick Cooling & Long Lasting: Freezes swiftly in 10 minutes in ice water or 20 minutes in refrigerator/AC air, providing cooling that lasts from 40 minutes to 4 hours. Dry & Condensation-Free: Keeps your retainers dry and cool, without any moisture buildup, perfect for hygienic storage. Portable & Convenient: Designed with a hanging hole for easy attachment to bags or lanyards, making it perfect for travel and daily use. Strong Construction: Features strongly stitched PP fabric for durability and a secure fit, protecting your retainers during transport. Discover the ultimate solution for keeping your retainers fresh and cool wherever you go. Our Cooling Case is not only portable but also engineered with bio-based PCM technology, ensuring your retainers remain at the ideal temperature for safety and comfort.