Let this Beautyrest Black Signature Elegance firm mattress make a mark on your quality of sleep. Robust T3-LUX pocket coils are made with three intertwined steel wires to give you the support you never knew you needed. Layers of gel-infused foams help pull heat away from your slumbering form so you can enjoy a new level of cooling rest. Plus, diamond-infused memory foam gently cradles your sore muscles as the gem particles improve this bed's ability to remove warmth. Covered in breathable fabric, this Beautyrest Black Signature Elegance mattress gives you a truly good night's rest.