HUNKER
The 11 Best Mattresses for Back Sleepers: "The Brooklyn Signature Hybrid offers three levels of firmness — soft, medium, and firm — with medium and firm likely being your best options if you sleep on your back. The mattress features a 6-inch layer of nearly 1,000 individually encased coils that provide adequate spinal support, while a two-inch transitional foam layer above it offers compression support."