I have been using this Beautyrest Black Hybrid CX Class Medium Mattress for over two months now. This mattress has coils and foam it has excellent lumbar support along with comfort. You can be lying or sitting on the mattress with someone and when they move you barely feel it. The mattress has deeper pockets so make sure the sheets you get can stretch or buy deep pockets. If you get a mattress pad make sure it has deep pocket fit.  The mattress covering has quality stitching material .