LASTING COLD - Our durable ice packs for coolers and lunch boxes are colder than ice at 18° F (-8° C) to keep your favorite foods and soft drinks cold all day. EASY TO USE - Filling our thin reusable ice packs is easy freezy! Simply add water once using the included funnel, shake, plug, screw the cap on & freeze until ready to use SMALL & MIGHTY - Nylon-reinforced for durability, these 5" by 7" freeze packs are the perfect size ice packs for lunch boxes and a versatile oprtion for an insulated cooler tote or backpack cooler SAFELY COLD - Use these small ice packs for lunch bags and small coolers to keep your favorite yogurt or salad properly chilled for hours at work, school, or on an outdoor adventures! THOUGHTFUL GIFTS - If your loved one is an outdoorsy type, you’ll want them to have everything they need when they go off-grid. Our reusable ice packs for coolers are essential camping gear for anyone planning a getaway!