I was so excited for our new bed to arrive. I wanted a good sturdy superking. Upon arrival we assembled it and much to our dismay there was no center support. There it a “t “ plank to cross under the slats, but the span of the bed, being a super king and very wide, is too far a distance to offer proper support with the pine slats provided. The entire bed slats and cross support sagged and bowed terribly. They are made of pine and very soft and flexible. Probably not the best material, especially when the company prides itself on the sturdiness. We ended up buying center leg supports on Amazon and installing them. It’s certainly helped. We are not large people at all. I can’t imagine if a larger person or two bought this bed. The exterior frame is solid and nice, and if you bought a double or smaller, I’m sure it would be fine. But adjustments in design are necessary when you have a six foot wide bed with regard to center support. Overall I’m disappointed out of the box with quality. Once we spent extra money and time installing the center support, it’s fine. However, I didn’t pay for a bed to spend more money to modify it after the fact. I wouldn’t recommend. I’m keeping it because we found a modification to remedy the issue, but certainly not what I expected given how they advertise how “sturdy” the beds are.