For outstanding support, the equilibria 12" features 13-gauge pocket coil innerspring and a gel memory foam layer for the sleep of your dreams. The heavier gauge perimeter coils are extremely beneficial by providing excellent edge support for maximum effective sleeping surface. Even if you toss and turn all night which you most likely won’t with the comfort provided from the equilibria hybrid mattress you have much more room to spread out.  Mattress Top Type: Pillow Top Mattress Type: Hybrid Included: 1 Mattress(es) Features: Fire Resistant, Wrapped Coils, Full Support, Mattress In A Box Additional Information: Suitable for Adjustable Bed Frames, Conforms To Body, Relieves Pressure Points, Eliminates Motion Transfer Manufacturer Warranty: 10 Year Limited Bed Size: Twin Measurements: 75 Length/Inches, 12 Height/Inches, 39 Width/Inches Maximum Weight Limit: 300 Lbs Base Material: 100% Polyester Comfort Type: Medium Care: Spot Clean Certifications And Listings: Certipur-Us Certified Country of Origin: Imported Mattress arrives compressed in a box and then regains its size and shape after opening.