I tracked my sleep temperature with a wearable before and after switching. My average sleep temperature dropped noticeably on the EcoCore Hybrid. The plant-based foam breathes in a way petroleum foam doesn't and the coil system adds airflow underneath. The best sleeping temperature I've had on a foam-top mattress.

My partner and I both sleep close to our respective edges on a queen. The patented edge support means neither of us has a compressed perimeter to worry about. We each get the full surface of the mattress. For a couple on a queen that usable space difference is genuinely meaningful every night.

I've spent years stuck between medium firm being too hard and soft being too unsupportive. Medium plush on the EcoCore Hybrid Deluxe is exactly where I needed to be. The coils give me support and the plant-based plush layer gives me the cushion I want. First mattress I've ever bought where I didn't immediately second-guess the firmness choice.

I researched South Bay's plant-based foam process before purchasing. The partial replacement of petroleum with plant-derived oils is certified and reduces the VOC content meaningfully. The mattress had essentially no off-gassing smell. Sustainable and high-performing. Both things are genuinely true here.

The mattress is well-constructed and the edge support is excellent. My only note is the feel reads more as medium than medium plush to me. I was expecting a noticeably plusher surface and the plush layer is present but subtle. Not a quality issue just a feel calibration question. True medium sleepers will probably love it as-is. Plush seekers may want to know.