Continuing with our top of the line one sided series. The mattress finishes 15” deep. It consists of a heavy-duty spring core, packed with organic cotton batting, and natural latex for the lumbar support. We then layer a micro coil spring unit above the core and top it with 1” of synthetic-like latex foam rubber. We top off the mattress with an organic cotton quilt. Using these materials creates a plush/firm (plush on top, firm underneath) feel with excellent support.