The majority of mattresses in the UK have spring interiors, which provide the ‘core’ support. Changing the spring construction or thickness (gauge) of the wire, the number of springs, height of each spring and the quantity can alter the tension and the feel of each mattress. Spring interior mattresses can be ‘zoned’ – across the middle to give extra support for heavier hips and shoulders; half and half, to provide different tensions on each side of the bed; or round the edge of the mattress to give it extra rigidity. Different tensions can be achieved within the same mattress.

Most foam mattresses are made from layers of different densities of foam. By varying their density and depth, it’s possible to achieve different levels of comfort and support. They are particularly suitable for use with slatted bases and adjustable beds.
Both Latex and Memory Foam mattresses conform well to your body shape and offer good support, especially for hips and shoulders if you sleep on your side – although memory foam is known for its excellent pressure relief. Memory foam responds and recovers slowly whereas latex foam responds and recovers immediately.
Latex foam has an open cell structure keeping it cool fresh and breathable, whereas memory foam has a closed cell structure making it less breathable and possibly a bit warmer to sleep on, although many manufactures have introduced methods to combat the heat using new technology like heat absorbent crystals.
Latex foam is durable and resilient but can be expensive and heavy to move.
Both materials are good at reducing partner disturbance when you move, great if you’re a wriggler.