Hypnos Cawthorne Support Emperor Mattress

Cover
A soft to touch Belgian damask cover, which gives a more traditional, upholstered feel than a knitted stretch fabric.

Comfort layer
A blend of cotton and polyester that combines their comforting properties with increased breathability and moisture wicking. In practice, that means less clamminess on warmer nights.

eOlus fibres
Hypnos' exclusive eOlus fibres are made from recycled materials and spun into breathable fibres that promote airflow to dispel heat. They also contribute to the secure, firmer feel this mattress is built around.

Soft White Fibres
Soft synthetic fillings that create a cosy feel while staying durable and resilient. They're designed to maintain their shape rather than compressing into dips over time.

Support pad
A dual density polyester pad that protects the spring unit and encourages equal weight distribution, which means the springs beneath wear evenly.

Spring core
1200 ReActive springs, each sitting in its own fabric pocket to increase responsiveness and isolate movement. You should feel less of a partner shifting about on the other side.

Edge support
The outer rows of springs use a firmer gauge, reinforced with a durable rod edge. That gives you a sturdier perimeter for sitting on the edge and makes the full sleeping surface usable.

Layer details from mattressonline.co.uk product page, September 2026.