You know that ache in your hip or shoulder when you wake up? If you sleep on your side, your mattress might be too firm, and a topper is the cheapest way to fix it without buying a whole new bed. I went down this rabbit hole after a string of bad sleeps.

What side sleepers actually need

Side sleeping puts your weight on a few small points: shoulder, hip, and knee. A topper that is soft enough to cushion those points but firm enough to keep your spine straight is the goal. Too soft and your hip sinks and your back bends; too firm and you are back to the pressure points.

The materials, explained

• Memory foam: the classic choice. It hugs your curves and relieves pressure. Look for three inches thick and medium density.
• Latex: springs back faster and sleeps cooler, but costs more and is firmer.
• Feather or down: soft and plush, but flattens quickly and offers less support.

For most side sleepers on a budget, a three inch memory foam topper is the sweet spot. It is the one I landed on, and it turned a mattress I was ready to throw out into one I actually look forward to.

One tip: check the return policy. Toppers are personal, and you will know within a few nights whether it is right.