Cooler bags are also called thermal bags and insulated bags. Generally cooler bags are constructed of three parts: the outer fabric cloth, the closed cell(insulted padding )and the tinfoil lining.
The canvas and oxford cloth are two common materials which are used to make the cooler bags as their durability and intensity.
The insulted padding is always SOFT EVA, which gives the items long-time protection. The tinfoil lining features a leak-proof insulated interior.

Each cooler bag is like a removable refrigerator, which can keep the food or drinks at the best temperature at least for 6 hours. When added some ice cube, or some plastic ice bags, the holding time will be longer.
The insulated bags can be divided into two kinds, the small ones for personal use and the large ones for industries.

Insulated Bags
The small ones can be applied for holding food, bento, drinks, wine, water, milk, etc, when going to school, going to work or just going a short trip.

The large industry transport insulated bags are widely used in many industries, including milk industry, cheese industry, red wine industries, medical fields, and many restaurants.

Insulated Bags
The cooler bags come with two top carry handles for easy portability, just like the eco-friendly shoulder bags, while large industry transport insulated bags have a more complicated structure, some are added four reinforced bars to give more support to the main bags, some have four layers, the linings of some are printed the brand logos or some beautiful motifs.

Exterior zippered pockets can be added on the thermal bags to hold more small items.
Many decorative processes are applicable on the cooler canvas bags, like embroidery, screen printing, heat transfer printing, woven labels, etc.