Keep your food and drinks perfectly chilled with these super handy reusable ice packs! This 4-pack of navy blue cold sheets is exactly what you need for lunch boxes, coolers, and pretty much any situation where you need to keep things cold. Each pack measures 6x4x0.7 inches - slim enough to fit in any lunch bag or cooler without taking up too much space. The best part? They're reusable and last forever! Just soak them in water for 3-5 minutes, then freeze overnight, and they're ready to keep your food fresh for hours. They're flexible too, so they mold right against your containers and drinks for maximum cooling power. Perfect for work lunches, school meals, picnics, camping trips, or even keeping breast milk cold. Stack a couple together for extra cooling time, or use individually for smaller containers. The polyester pongee material is durable and easy to clean - just wipe them down between uses. Seriously, if you're tired of soggy lunches or warm drinks, these are a total game-changer. They're lightweight, they don't leak, and they maintain cold temperatures way better than those disposable ice packs. Great for outdoor activities, sports games, road trips - basically anywhere you need reliable cooling. Your food will stay at the perfect temperature, and you'll save money since you're not constantly buying new ice packs!