EasyLunchboxes insulated lunch bag cooler is made of the highest quality 300D polyester for extra durability and toughness. Use with EasyLunchboxes compartmentalized food containers for an affordable and green lunch box solution. These coolers are specially designed to carry our best selling bento containers upright, so food stays put. Say goodbye to the scrambled meals you get using other, sideways carriers. With these, at lunchtime your creations will look as yummy as when you packed them! You’ll have plenty of room for our container(s), a drink, ice block, whole fruit and extra snack. No more struggling to fit your menu to your bag. Our sleek and functional, zip-shut insulated cooler will hold even a whole day’s worth of food and keep it fresh. Great for work, school, and travel! **Roomy enough to hold up to three of our containers** Machine washable in cold water. Use gentle soap/gentle cycle/air dry.