Cooler Shock Ice Packs, Long-Lasting, Powerful Cold Retention, 7CSSSET (5 Small Packs), Reusable, Quick Freezes for 8 Hours, Maintains -7.8°C

COOLER SHOCK is a powerful ice pack developed using technology originally developed for blood transport. Transporting blood requires maintaining a specified temperature for extended periods of time and ensuring that blood components do not change. COOLER SHOCK was developed by applying technology developed for this purpose, which maintains temperature for extended periods by gelling a liquid. COOLER SHOCK is made of three layers: aluminum, which has excellent thermal conductivity, polyethylene, and nylon, which have excellent rigidity. It is only approximately 0.2 mm thick. This allows it to efficiently absorb high temperatures from the outside air. <COOLER SHOCK Features> ● Maintains a temperature of -7.8°C for extended periods ● Short freezing time ● Thin, space-saving design ● Reusable ● Contains ingredients harmless to humans and the environment <How to Use> 1. Pour the required amount of tap water (based on size) into the COOLER SHOCK. S: 355ml, 16.5x19x2.5cm / M: 830ml, 25.5x25.5x2.5cm / L: 1660ml, 25.5x35.5x3.8cm *This product is a set of 5 small bottles. 2. While removing all air, seal with the included silicone cork. 3. Tighten the screw cap tightly. 4. Freeze for at least 8-12 hours before use. Since the bottle is designed to be filled with water by the customer, it is lightweight, easy to transport, and takes up minimal space in stores! Set of 5 small bottles Dimensions: W19xD2.5xH16.5cm Pre-chilling Time: 8 hours Water Volume: 355ml Reusable