Get comfy sleep for less on the Zinus Tight Top Bonnell Spring Mattress. Mattress is perfect for bunk beds, trundle beds, and daybeds. This budget-friendly mattress has a firm feel and keeps you comfortable at night with its soft and breathable cover. Plus, the long-lasting supportive coils and foam will keep you sleeping great for many nights to come. The foam in this mattress is certified safe, so you can rest easy knowing there are no harmful chemicals. To top it all off, this mattress comes conveniently compressed in a box designed to leave a smaller carbon footprint and includes a 10-year warranty for peace of mind. Age Group: Adult, Universal.