Portable Size Design: The perfect small ice pack at 6*4 inches is easy to carry and lightweight. With a thickness of 0.7 inches, the ultra-thin design saves storage space in your lunch bag—perfect for backpacks or golf bags! Usage Instructions: These reusable ice packs are simple to use. 1. Soak in water for 3-5 minutes, 2. Wipe the surface dry and place in the refrigerator to cool, 3. Freeze for 6 hours before use. Multi-Scenario Use: Whether for lunch on the go, outdoor adventures, or camping and picnics, our ice packs are your perfect daily companion. Ideal for keeping food fresh and drinks or beer cold. Purple Lunch Box Ice Pack: The cute purple ice pack features a leak-proof design and is flexible to fit perfectly in your lunch box or cooler bag. Durable and reusable, it helps avoid the waste of disposable ice packs, ideal for home use.