PROBLEM TO BE SOLVED: To provide a hat for preventing heat stroke, which can prevent heat stroke by suppressing an internal temperature rise while maintaining comfort of a wearer. SOLUTION: A hat for preventing heat stroke is a heat shield sheet in which a material 3 having a high reflectance against radiant heat such as aluminum foil and a material 4 having a low reflectance against radiant heat such as a nonwoven fabric or a resin sheet are laminated. 1, the material 3 having a high reflectance against radiant heat such as aluminum foil is directly attached to the inside of the cap 5, and the material 3 having a low reflectance against radiant heat such as a nonwoven fabric or a resin sheet is It is exposed on the head side. [Selection diagram] Fig. 5
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