I was hesitant in purchasing a mattress in a box. Being unable to test something so important and expensive out before purchase had me on edge. However, those worries were unfounded. This is, by far, the most comfortable mattress I've ever had the pleasure of sleeping on. It's heavy, solid. Something I can absolutely see having many years from now. I have arthritis in my spine and hips. With my old mattress, I'd wake up multiple times a night in pain, tossing and turning. However, the first night I slept on this one, I slept through until morning.
Setup was easy, though the mattress started outgassing before I fully had it unwrapped. While it says to give it 2-3 days to outgas, I slept on it the very first night after it had roughly 12-14 hours to outgas.
Waking without pain had me in tears of delight. Do yourself a favor and pick this one up. Your body will thank you for it.