-Kumfy Flex - the firmer mattress with a water-proof and cotton face, giving full flexibility.

The variety of choices range from relatively soft to a rather firm mattress.

People with osteoarthritis of the spine may benefit from switching to a firmer mattress and wearing a back brace or neck collar.

No matter how comfortable a squishy-soft feather bed may seem at first, a firmer mattress is usually the best for your back, Polivka says.

Memory foam produced a revolution in support bedding, with mattress toppers becoming a way to revitalise an old, or overly firm mattress.

One of the massive fins swept up to lie for an instant along his back, feeling like a soft, firm mattress as it steadied him.

Be sure to sleep on a comfortably firm mattress.

A smooth, firm mattress, made in one piece, should be provided.

"In general, you want to sleep on a firmer mattress," says Press, "but it doesn't have to be the firmest one."

I like to sleep on a very firm mattress, so a futon is perfect for me.