The organic wool and cotton also add to the bed’s comfort ... The biggest difference between them is that Zenhaven is a double-sided mattress with a different firmness on either side.

OTTY has announced its new Natural mattress collection ... polyester and natural rebound cotton. It’s also double sided so you can turn and rotate it using the handles to prevent any wear ...

But this Aspire design is the only mattress I’ve tested that offers two temperature-regulating sides. I set a double version ...