Pocket Cotton combines two things: 255 pocket springs per square metre, and a natural cotton layer on each side.

The pocket springs stop movement from travelling across the bed, and the cotton handles airflow and prevents the heat that thick layers can bring.

It has Janssen foam at density 30, and it flips.

There is also a 30 cm version of this mattress if you want more height. The difference is height only: the same springs and the same layers.