King mattresses

Best seller

All foam, with no coils. A gel-quilted knit cover and ComfortVisco memory foam sit on Jamison’s DualCore foam core.

Best seller

A plush hybrid under a copper-infused cover: gel foams and ComfortVisco memory foam over individually wrapped coils.

Best seller

Jamison’s firm, lower-profile hybrid. A gel-quilted knit cover and two thin gel foams sit over individually wrapped coils.

A firm hybrid under a copper-infused cover: a thin cushion of gel foam and ComfortVisco over ComfortFirm foam and individually wrapped coils.

A medium hybrid under a copper-infused cover, and the only Jamison we carry with both copper-infused memory foam and latex.

SlumberCool’s 12-inch starting point: a cool-to-the-touch cover, comfort foam that doesn’t hold heat, and a lumbar band over 884 coils.

The 3Z with a firmer quilt on top. The same cooling cover, lumbar band and 884 coils underneath.

The MAX with an extra plush layer sewn into a euro top. The softest of the three MAX feels.

Twice the 3Z’s comfort foam, under a cover with 80% more cooling yarns.

The MAX’s cooling cover and double comfort foam, with a firmer quilt for more support at the surface.

SlumberCool’s coolest, deepest bed: mineral memory foam over 1,044 coils, with reinforced lumbar support and edge support all round.

The 3Z PRO’s cooling and 1,044-coil support with a firmer top, for anyone who wants that build without the sink.