This medical cooler travel case is light weight and has multiple layers of thick insulation to keep your medicine cold for up to 10 hours. The inside liner is wrapped in high- quality aluminum foil and comes with a flexible EVA insert with pockets that can hold 3 mini ice packs in place. The outer hard shell is made of 600D polyester for durability and longevity. The flexible EVA insert also has a temperature sensing strip on it to make sure your items remain cold.