Which is better Full Foam mattress or Coir Mattress?

foam mattress is better anyday. example - SLEEPWELL mattress has varieties of FOAM mattress where they give guarantee for more than 5 years(DUET) 10 years(GOLD PLUS) or 15 years(PEARL PLUS). If your queation is about heating problem then you should be panic if you buy some unbranded foam mattress. All the SLEEWELL mattresses are highly treated with special chemicals in order to avoid heating problems, dust mites, and etc. On the other hand COIR mattresses are like patient mattresses and its a complete myth that coir is only good for back problem. All the coir mattresses has a life of about 2, 3 or maximum 4 years unlike FOAM mattresses.