Sometimes you just need a mattress that does the job — no extras, no drama. The Zinus Innerspring Mattress is built with a tempered steel Bonnell coil system for steady, dependable support. It’s a great fit for bunk beds, day beds, or anywhere a single-size mattress needs to slide in and hold up. There’s a light layer of foam on top, just enough to take the edge off, plus a quilted cover that feels soft to the touch. It’s lightweight, easy to move around, and a solid option for kids, guests, or even a quick nap spot in the study. Nothing complicated — just a good, springy mattress that gets it done. Single size only. Mattress only — frame sold separately. 5-year warranty included.