Latex sleeps cool. Only memory foam sleeps hot, as memory foam is the only upholstery material that is temperature sensitive.
Latex is natural rubber. If you stick your nose in it, you can smell the rubber...like sticking your nose in a bag of rubber bands.
It doesn't off gas any chemical smells, because there are none.
The toppers come with a sewn on reversible cover, which has corner straps that hook around the corners of the mattress...to keep it in place.
The topper to get is the 2" soft Talalay latex...shown here:
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