The space savings is undeniable practicality too. We can take it anywhere (plane, car, train ...) come without significantly burdening our luggage and blow by sparing the constraint of traditional bed super binding umbrella. As against the side mounting / dismounting is really tedious. This is a metallic frame come together. So, it is necessarily longer than the cot! and removal hurts the hands ... we must succeed in unclip the metal elements from each other and it's not easy! Idem, to inflate the mattress nevertheless remains rigid enough to baby, especially if there is to spend several nights. So finally convenient but a bit too expensive for what it is!