What makes a mattress luxury?

Coils:

A luxury mattress has wrapped coils. Wrapped coils can help reduce motion transfer which makes it easier to share a mattress without being woken up multiple times each night. Luxury mattresses also have tempered coils which is a heating and cooling process that makes them more durable.

Upholstery:

A luxury mattress is made with special material placed underneath the outer cover of the mattress that provides more comfort. Additionally, many luxury mattresses are made with memory foam that provides added comfort and higher support to the entire mattress.

Fabric:

A traditional mattress cover is often made of a polyester material; whereas luxury mattresses use more luxurious materials like silk, rayon, and cotton.