Super king size is not sturdy enough for every day use. The middle joist, support legs and slats are badly designed as the middle load bearing joist which has the support legs on does not attach to the main frame and the slats don’t all go in their slots if the floor is even the slightest uneven, which means the frame is not bearing weight correctly.  First time getting on the bed the middle joist shifted and the support legs twisted and bent. Everything has been tightened but every night we precariously lower ourselves into bed and dare not move once in bed. 

After 5 years of sleeping on the floor I was very much hopeful a bed would finally help with my back and sleeping issues, but the bed has actually made it so I don’t want to go to bed for fear that it is going to collapse if I roll over. 

Smaller sizes might be ok but super king size poorly designed.