If you want a one-and-done mattress that caters to your every need, we got just the thing. This Amazon bestseller is a bestseller for a reason. First, it’s super affordable for a mattress, which is always a plus. Second, it’s offered in four different sizes (Twin, Full, Queen, and King) as well as four different foam heights (8, 10, 12, 0r 14 inches). Depending on how squishy you like your bed, you can choose how much foam you want. (The less foam, the more firm.) On top of that, it’s made with high-quality, durable foam that can hold its shape for years. As for the best part, it has a seven-zone ventilation system that allows for extra airflow, which means you’ll stay nice and cool all night long. Last, but not least, each layer is infused with premium green tea, which will keep your mattress fresh and odor-free.