I received my tent today and I started to unfold ... I was fine unfold slowly it does not help me to better understand the mechanism ... so I took the leaflet and to my surprise I did it the first time! The trick is to keep the tent well flattened by the base of the isosceles triangle ... then there is more to the twisting and bending is done alone !!! So I'm thrilled! Very good size for my son of 22 months. It goes by against me I shall have to provide stakes (fasteners are provided) to attach the tent to the ground from the beach because it is extremely light. The mattress is not really stuffed but it I think it is somewhat the case for all tents. Lightweight, compact, cheap ... I recommend it !!!