J-Bed is as described, it is very easy to fold and open and with the wheels , it is so easy to move around.  The wooden slates seem good quality but they have been very roughly finished which meant  that when i unpacked the bed and gave it a clean, i got splinters on both my hands.  The mattress is thin, barely 10 centimetres but don't be fooled, it is actually very comfortable.  I bought the bed for my brother who frequently visits, he is 6'4 and 120 kg.  Having slept on it for 4 days, He is very happy.  I would say that so far it is all positive but it is early days, i will update this review if something changes in the coming months.