This was such a disappointing purchase - it looked such a pretty bed but is made using the absolute minimum of slats ensuring the absolute minimum of comfort. According to any bed manufacturer or bed slat supplier, slats should be no further apart than 6cm in order to provide sustained support for the mattress. On this bed they are up to 9.5cm apart in places. In addition there is a flat slat across the centre of the bed just where the heaviest part of the sleeper will generally rest. The result of this is that the slats can clearly be felt through the mattress and will in time cause damage to the mattress through their lack of support. Given the specifically spaced, drilled holes in the frame it is difficult to add more slats. I even went to the trouble and expense of instating correctly spaced solid slats but this was what I was getting away from, wanting a sprung base. I miserably put the bed on ebay and went into a bed shop and bought a bed I could see first. Doh! Be warned.