- Simple to Use: Just add water to activate the expansion of ice crystals and freeze the bag for 2 to 4 hours. This hassle-free solution keeps your food box cool throughout the day without any complicated steps. - Versatile Applications: Perfect for preserving breast milk and keeping food cool. Supports isothermal transportation and enhances cooling efficiency in fans and air conditioners. Reliable thermal performance ensures effective cooling whether you’re at home or on the go, with sustainability in mind. - Portable Design: Lightweight and compact, this bag easily fits into your backpack, making it ideal for outdoor activities and convenient transport during daily commutes or traveling. - Reliable Performance: With powerful ice particles that expand effectively, these cooling packs maintain the freshness of your food and beverages at the perfect temperature. - Use Scenarios: 1. Take it on a picnic to keep your snacks and drinks chilled. 2. Use it during travel to ensure your groceries remain fresh until you reach your destination. Experience efficient cooling without the fuss. Perfect for everyday use or travel, this product ensures your perishables stay fresh and delicious regardless of the setting.