Can the 'Staycool™' gel layer in this Sleepeezee mattress really deliver a cooler sleep? We put it to the test

A navy blue upholstered bed holding the Jessica 1800 Pocket Gel Mattress. A light fixture with five brass globes hangs overhead and there is a white panelled wall behind the bed and a wooden floor.

This Sleepeezee Jessica 1800 Pocket Gel Mattress review puts the brand's hybrid mattress to the test to see if it can deliver a cool, comfortable, and supported sleep. 

The Jessica mattress is constructed from a mix of springs, memory foam, and a layer of what the brand dubs 'Staycool™ Gel' that's designed to regulate body temperature.