Thermal Picnic Lunch Bag
Model No.: bwd-04
Material: Other Materials
Packaging: 1pc/polybag ,50 pcs/carton
Thermal insulated promo frozn lunch picnic camping cooler bag
The outer layer of the Polyester Cooler Bag could be made of water-proof and durable aviation material to secure temperature control(for example now-woven with mat lamination, polyester with pvc coating, cotton, jute, nylon and pvc ). The inner part consists of shiny aluminum foil or pvc,peva and the middle layer could be insulated PE foam to reduce heat and enhance insulation.Aluminum in mylar - it reflects radiant energy. Most of the soft bags also have about 1/2" of urethane foam between the inner and outer walls to block conduction transfer.
(The thickness of the foam could affect the effection of the cooler bag. )