MAGIIN Ice Packs for Cool Box Ice Blocks for Freezer Reusable for Lunch BoxKeep Food and Breast Milk Fresh in Office on Business Trip or Traveling

Basically a plastic container that you fill with water and freeze, and too big if you also want to put a baby bottle in the bag with frozen container

You have to refill the water before placing it in the fridge

Parece bueno. Viene vacio.