А portable bathtub

 Its name is Xtend - a meager 7 kgs heavy strip of metal that’s just 8.5mm thin and can in an instant become a bathtub:

source

This is result of clever design and use of metal and a washable cloth lining on the inside. The Xtend is a recipient of the Red Dot Best of the Best award for 2015, Designer: Carina Deuschl.

How do you like it? For me Xtend is the perfect solution for small bathrooms and for travelling.