Comes From: The UK
Cost: £599 for a double, £699 for a king
Trial Period: 100 nights
Construction: 4cm memory foam, 3cm cooling foam "core," 18cm reflex base foam (25cm total)
With its trademark yellow trim, there's no mistaking the Eve, which combines two top layers designed to work together for the perfect combination of contouring and cooling, with a foam base. The memory foam and cooling foam sections are much smaller than some (about half of the Dream Zebra), but Eve claims this is just the right amount for a comfortable, supportive mattress. As well as the 100-night trial, you get a 10-year guarantee. Eve has also now launched a number of new options, including a "light" and "premium" mattress.