The Emma Luxe ViscoCool is a hybrid: seven zones of individually pocketed springs, encased in foam, under four foam layers. The springs are ringed by a foam frame, which is why the edge holds when you sit on it — a perimeter specification many makers leave out entirely.
Cooling is the model’s stated purpose rather than a side effect, and there is material behind it: ThermoSync foam is loaded with graphite, which conducts heat away from the surface; the PolarLuxe cover is 28% polyethylene, a cool-to-touch fibre; and a spring core moves more air than a solid foam block. Emma also gives a 150-night trial, and takes Afterpay and Zip at 0%.
Two things count against it. Medium-soft is the only firmness Emma makes, in any model, so there is nothing firmer to switch to if it turns out too soft. And the free delivery and returns reach select metro addresses only — outer and regional areas pay a fee, and that fee is not refunded if the mattress goes back.