Sturdy box spring! It arrived super quick, 4 days after I ordered it. It took about half an hour for me to put it together by myself. It does NOT come with legs like shown in the picture, it is just the box spring. But that works perfectly for me because I’ll be using this for my toddler sons bed so he is low to the ground. After the mattress was on it, and lots of jumping around and wrestling, it was completely sturdy, noiseless and didn’t budge! Would definitely order this again.