| 摘要 |
PROBLEM TO BE SOLVED: To provide a bag such as a school bag capable of preventing the increase of temperature inside the bag even when the outside of the bag is heated with solar heat. SOLUTION: A flap part 4 covering storage parts 1 and 2 of the backpack A consists of a surface material 9, a heat insulating layer 10 under the surface, and a backing material 11 under the heat insulating layer. The heat insulating layer 10 is made of a polyester tricot fabric coated with titanium alloy. |
