保冷剤

I’ve been using this in my son’s lunchbox for a week now, and it keeps his sandwiches cool until lunch. The non-toxic gel inside gives me peace of mind, and it stays frozen for hours after a full night in the freezer.

I left mine in the freezer overnight like the instructions say, and the next day it kept my sandwich perfectly cold until lunch. The non-toxic gel filling inside makes me feel a lot better about using it with my kids’ food.

I was pleasantly surprised by how well it held the cold—my sandwich and apple were still crisp after four hours in my bag. The gel inside feels thick and secure, no leaks at all.