This is solid wood, not particle board and solid wood is what you want for a bed foundation. It is packed really well and the design is great. The sides are sanded to a curve so that it is a smooth foundation for your mattress. It is easy to assemble with bolts and screws - very solid. It even comes with a cover that you put over the entire box spring once it is assembled. This is a well designed and well made product. Note in my 1st photo you see that an 8 inch mattress would work fine with this bed and this box spring, although I plan to add a bed-in-box 10 inch memory foam mattress.