Sell Thickened beam insulation bag reinforced portable constant temperature preservation lunch box bag student couple lunch bag lunch bag light travel out bag lunch box bag best price

Heat preservation and cold preservation: This product is a special bag with short-term heat preservation effect, which can provide good heat preservation effect. Strong and durable: the insulation bag has good impact resistance, it is not easy to break when pressed or impacted, and will not leave scratches. Environmental protection: using food grade environmental protection materials, non-toxic, tasteless, anti-ultraviolet, and not easy to change color. Keep fresh: keep food fresh for longer Sealing: It has excellent airtightness and will not let the food in the insulation bag quickly become cold and deteriorate. Product specifications: Color: green/blue/gray/pink Weight: 80g Size: 20*19*13 Material: cotton and linen