What better mattress: polyurethane foam, latex or spring.
Polyurethane foam mattress - a mattress of foam rubber.
Such mattresses least service life, it is the cheapest, but it can cause allergic reactions.
Latex mattress - a mattress made of natural fibers "latex", which is derived from the rubber, that is, the juice of rubber trees, natural latex is soft and elastic, makes anatomical human body form, wear-resistant,this mattress is expensive( but is latex and synthetic, is much cheaper, respectively, the quality of the mattress below).
Spring mattress - a mattress with a base of a metal mesh or spring separate springs, each wrap with a special material.
Mattress metal spring from a single grid is cheaper, but is smaller.Such a mattress on the second year of service starts to creak, very prominaetsya in the center, like a hammock, and with spring time can lose elasticity and uniform pressure in some places in the side sleeping man.
Mattress of individual, mutually independent springs better and more expensive than more small springs per square meter, the better the mattress.
Now summarize the above.
If you need a cheap mattress, choose polyurethane .
Longest and is comfortable to use, but at the same time, the road will be a mattress of natural latex .
Spring mattress is better to choose an independent box spring, a mattress softer, with good cushioning, but be careful not to jump on it, so he began to squeak ahead of time.
Note your health and preferences.If you have an allergy, it is best latex mattress, the springs in the dusty and foam can be toxic.If there are diseases of the spine, maybe you fit pillowtop mattresses with latex inserts.
Video. Expert Tips - how to choose a mattress.