Mainstays Twin 8 in Tight Top Innerspring Mattress with Gel Foam

Make the most of smaller sleeping spaces with this Mainstays Twin innerspring mattress, sized to work in bunk beds, trundle beds, dorm rooms, and guest rooms. It pairs a firm, tight-top surface for a supportive feel with Bonnell coil construction that gives it a classic innerspring structure, plus a gel foam layer that adds a bit of cushioning on top. At a lower 8 in profile and standard Twin footprint, it's easy to plan around in compact rooms. It arrives as a mattress-in-a-box, so you can bring it in and set it up with less fuss—just allow 24 to 72 hours after unboxing for it to fully expand.