Get the matress protector!

Immediately, neither of us had any back pain after sleeping on this mattress, much less stiffness in general. However, I still feel my hubby's restless leg movement andAfter a few months, the top layer began to separate from the bottom layer along the width of the bed, where our low backs are. Customer support says it it most likely sweat causing the water soluble adhesive to separate and getting the mattress protector was a big help. I slept very hot on this mattress at first, putting a folded sheet on my half of the bed solved this 100%. I also expected more of a memory foam feel, it has a slow sensation of sinking into the deeper layers of the mattress. The Nest pillow is amazing beyond belief-I highly recommend you get that along with your new mattress.