Cooling-off period (consumer rights)
In consumer rights legislation and practice, a cooling-off period is a period of time following a purchase when the purchaser may choose to cancel a purchase, and return goods which have been supplied, for any reason, and obtain a full refund. == Laws == Many nations have passed laws that create cooling off periods for specific transactions, although the conditions under which they may apply and the transactions covered by the laws varies significantly by jurisdiction.
Source: Wikipedia — Cooling-off period (consumer rights) (CC BY-SA 4.0)