Innerspring mattresses provide a buoyant sensation, thanks to steel coils that bolster layers of fiber and foam under a quilted top. If you feel too sunk in or hot on an all-foam mattress, an innerspring can offer more resilience, along with firmer edges, and intrinsically more airflow. But innersprings can be notoriously difficult to shop for, traditionally requiring a trip to a mattress store to navigate dozens of different models that have confusing names, specifications, and features. The WinkBed (Luxury Firm) and IKEA Hesstun (Medium Firm), along with the other picks in our innerspring mattress guide, performed best in our testing. A few, including the WinkBed, can be purchased online, often with generous trial and return policies.