Important notice: Wizz Air introduces a passenger-friendly regulation

One of the biggest drawbacks of travelling by air is the size of your luggage. Every millimetre counts, and if you go over the allowed size, you’ll have to pay a lot of extra money.
Like all other airlines, Wizz Air limits the exact size of the luggage you can take on board. Now, they have added some new information: “The size limit does not include the luggage handle/wheels; however, the wheels may increase the size of the luggage by up to 5 cm.”
So now the size of the suitcase without wheels and handles is taken into account. This is a great news to many of us.
Source: wizzair.com