Comfort level is the way a mattress feels when you are lying down on it. It is also all about personal preference. While some of us find a mattress with firmer upholstery layers more relaxing, others prefer the cradling feel of softer, plusher, comfort layers.
One manufacturer's "Firm" may feel harder that another's "Extra Firm", but here is a guide to the most common comfort levels:
Firm mattresses deliver an extra supportive feel and have the least amount of surface give. These mattresses are built with high performance upholstery layers which deliver a supportive, yet comfortable feel.
A Cushion Firm mattress is not too soft and not too hard. These mattresses are built using combinations of supple and dense upholstery layers to deliver a soft surface and deep-down firm feel.
This mattress type offers layers of plush comfort with more surface give than a firm mattress. These mattresses feature an even softer, more supple sleeping surface while delivering the same deep-down firm feel. If you prefer a lot of softness, but with underlying supportive feel, you will probably enjoy a Plush mattress.
This is the softest comfort level available. This type of mattress is often deeply quilted and allows the sleeper to really sink into the surface fibres due to the maximum surface give. Sleeping on an Ultra Plush mattress can feel like you are sleeping on a feather bed.