Regret your Black Friday purchase, but threw away the box? These are your rights (even if you no longer have the packaging)

Interesting Black Friday deals fill many (online) shopping carts. But what if you change your mind afterwards? “You can invoke the withdrawal period for online purchases,” explains Pieter-Jan De Koning, director of the Consumer Ombudsman Service. But how long does that period last? What is the difference with the warranty obligation? And can you return a product without the original packaging? “Apply this tip when you leave the product at the postal service.”