Perfect for day trips, as well as business trips and travel lasting from one night to a week. They are very light. Both have casters for easy movement. Carry-on size. The larger one has a net storage inside, and a pocket on the back for magazines, etc. The smaller one has large, medium, and small pockets in the front, in addition to the storage inside, which is very convenient. The large size can be fully opened. 50 x 38 x 18 (cm) The medium size cannot be fully opened. 39 x 30 x 15 (cm) I would like to purchase the set of two. The price is the same as buying one, as the shipping cost would be high. I do not have any pets, and I do not smoke.