Here's what you should know....
The side rails and other parts are in the back of the head board in a zipped compartment. Not even customer service knew this. It's not until page 12 of the assembly instructions they tell you where to find these parts. Seems that bit of info. should be on page 1.

Overall, It's a good value for the money. We are using it in a guest room but if I were using it in my boys rooms i would beef up the cross braces that support the mattress. I also ordered this mattress with the Wayfair basic low profile box spring. It looks great!