DescriptionThis handy cooler pack keeps breast milk cold without the of ice. It is well made of premium material for durable and practical use. And it can stay frozen longer than traditional ice. Just toss them into the freezer to re-freeze and use again.Features- Color: Blue.- Material: HDPE.- Size: About 21.4x9.6x5.5cm.- Made from material, durable to use.- Application: breast milk preservation, beer beverage preservation, food and other items preservation.- Great for camping, picnic, beach, travel, office.- Just toss them into the freezer to re-freeze and use.- It will not leak. They get cold as ice for many hours and keep the food fresh.