Does a mattress need coils to be comfortable?

The WinkBeds GravityLux is a 100% memory foam mattress.

I’ll admit that I was a little bit skeptical when I first heard about this brand, since most mattresses at this price point are hybrids with a sturdy coil support layer.

Can an all-foam mattress really provide enough support, durability, and comfort to justify this premium price tag? Let’s just say I was pleasantly surprised…