This is a lovely, deep and well upholstered mattress with a medium feel spring unit for support and comfort.
The spring is a 13.5 gauge, medium feel spring.

Deep layers of upholstery are layered on top of the springs.  The mattress is then deep quilt stitched as you can see.
The outer fabric is a high quality Begian damask.
Handles on the side for easy turning.

Depth of mattress is approx 27cm
medium Firmnessopen coil