Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam

Built with a low-profile 6-inch height, this Mainstays Twin mattress is made to fit compact sleeping areas where space is tight. Its slim profile makes it a practical option for bunk beds, trundle beds, dorm rooms, guest rooms, and other small settings. Inside, a Bonnell coil innerspring core pairs with gel foam under a Tight Top design to create a firm feel. It ships as a mattress-in-a-box, so it is easier to carry into smaller rooms and unpack where you need it; allow 24-72 hours for full expansion after unboxing before use.