7 Best Full Size Mattress In A Box in 2026, Ranked

The Nectar Premier is a 13 inch all foam mattress with a cooling cover and a thicker comfort layer than the base Nectar model. We picked it as our overall winner because it pairs strong pressure relief with CertiPUR-US certified foams and one of the longest home trials in the category. The full size version ships compressed and expands within a day or two of unboxing.

What owners report: Owners frequently describe deep contouring that eases hip and shoulder pressure for side and back sleepers. A recurring note is that it sleeps slightly warmer than expected for heavier or hot sleepers despite the cooling cover.

The Loom & Leaf is Saatva's flagship memory foam mattress, offered in a Relaxed Firm or Firm feel. It uses a gel cooling layer over high density foam and includes foam edge reinforcement that is uncommon in boxed beds. We rated it highly for side sleepers because the comfort layers cradle the shoulders and hips without the sinking feel of cheaper foam.

What owners report: Reviewers often highlight the plush yet supportive feel and praise the white glove delivery option. Some owners mention the Relaxed Firm runs softer than they expected, so heavier back sleepers sometimes prefer the Firm version.

The DreamCloud Premier is a 14 inch hybrid that layers memory foam over individually wrapped coils with a cashmere blend cover. We chose it as our top hybrid because the coil unit adds bounce and airflow that all foam beds lack, which suits combination sleepers who change positions. The full size arrives boxed and is GREENGUARD Gold certified in DreamCloud's lineup.

What owners report: Owners report a balanced medium firm feel that works for couples with different preferences. A common theme is that the plush top softens noticeably during the first few weeks of break in.

The Tuft & Needle Original is a straightforward two layer foam mattress using the brand's adaptive foam over a support base. We rated it our best value because it delivers a neutral, responsive feel without the slow sinking of traditional memory foam, at a lower entry point than most rivals. The foams are CertiPUR-US certified and the full size ships in a compact box.

What owners report: Many owners praise the simplicity and the way the foam feels supportive without hugging too closely. The most common criticism is that the firmer feel is too much for dedicated side sleepers who want more cushioning.

The Zinus Green Tea is one of the most widely sold boxed mattresses and a frequent pick for guest rooms. It uses memory foam infused with green tea extract and castor oil over a support foam base, with CertiPUR-US certified materials. We include it as our budget choice because it offers genuine memory foam contouring at the lowest tier we reviewed.

What owners report: Owners consistently call it a strong value for the money and a comfortable option for occasional use. A recurring note is that it tends to sleep warm and may soften faster than pricier foam beds over time.

The Plank Firm is a flippable mattress offering a firm side and an extra firm side, aimed at sleepers who want minimal sinkage. We rated it our top firm option because few boxed beds cater this directly to stomach and back sleepers who need their hips kept level. The full size ships compressed and uses CertiPUR-US certified foams.

What owners report: Owners who prefer hard surfaces report relief from lower back discomfort and appreciate the dual firmness flip. The main criticism is that side sleepers find both sides too hard on the shoulders and hips.

The Cocoon Chill is Sealy's boxed memory foam mattress with a cover treated to feel cool to the touch. We selected it as our cooling pick because the phase change cover targets the warm sleeping that owners often complain about with foam beds. The full size arrives compressed and uses CertiPUR-US certified foams in a medium firm build.

What owners report: Owners often mention the cover does feel noticeably cool when you first lie down. A common caveat is that the cooling sensation fades through the night and the foam underneath still holds some heat.