The Classic is Nectar's baseline, and for most people it is the right one. Twelve inches of gel memory foam that cradles without swallowing you, or the same comfort layers built over individually wrapped coils if you sleep hot or share the bed with someone who moves. Both come with a 365-night trial and the Forever Warranty, which is the part that makes buying a mattress online feel less like a gamble. It anchors our mattress collection.Details 12" profile in both constructions Memory Foam: five layers of CertiPUR-US certified foam, gel-infused to move heat away from the surface Hybrid: six layers, gel memory foam over individually wrapped steel coils for contouring support and more airflow Quilted cooling cover on the Hybrid Shift-resistant cover keeps the layers from sliding under the sheets Medium-firm feel, the range most back and combination sleepers land in Sizes from Twin through Split King in both constructions 365-night trial and Nectar's Forever Warranty Fits a standard platform, slatted or adjustable base Styling TipsChoose Memory Foam if you want pressure relief and the sensation of sinking in a little, which side sleepers and anyone with shoulder or hip complaints usually prefer. Choose the Hybrid if you sleep hot, weigh more, or want easier movement across the surface, since the coils add both airflow and pushback. Same cover, same trial, different support underneath. Pair either with a frame from our beds and headboards collection.A 12-inch mattress works with almost any bed, though it will sit taller on a platform than the 10-inch mattress it is replacing, so check the headboard reveal before you commit. Adjustable bases are fine with both constructions. The rest of what goes around it, nightstands, lighting and storage, lives in our bedroom furniture collection.Care Rotate head to foot every three to six months; never flip, both constructions are one-sided. Use a breathable mattress protector, and wash it rather than the mattress cover. Spot clean only with a barely damp cloth and mild soap, then let it dry completely before making the bed. Give a new mattress up to 72 hours to fully expand and off-gas before judging the feel. Support it on a solid platform or slats no more than 3 inches apart, or the warranty terms will not hold.