also: クーリング・オフ
noun
cooling-off period
A legal term referring to a period during which a buyer can cancel a contract without penalty, often used in door-to-door sales or mail order contexts.
クーリングオフ制度を利用して、契約を解除した。
I used the cooling-off system to cancel the contract.
訪問販売で買った
Products bought through door-to-door sales may be eligible for cooling-off.