What has impressed me spontaneously, was the low weight of the empty trolleys because you notice immediately that you carry around no dead weight. He has already normal enormous amount of space, due to the additional "pleats" that occurs when you open the zipper, you win again plenty of space to do so. We have all the luggage of two people plus winter jackets (which needed to the airport were), laptop, power adapter, battery chargers and other Geraffel what you had today so go ;-) needs, for a 3-week trip to Bali in it. Although it was very difficult matter, he had to move well and roll. I am extremely pleased.