I don’t use mattresses these days – this says everything. Now I am just using a blanket to sleep on.. May be I should sell them on some second hand mattress sale I don’t if it healthy or not healthy to use or not use mattress. I have to research on that on the net. Since its pretty cold these days perhaps I should start using them because I can’t sleep well due to the cold. I don’t open the windows or doors but its still very cold.