A recent roundup from Good Housekeeping highlighting mattress picks for side sleepers is a good reminder that this sleep position has its own set of needs — and that a mattress marketed as “medium-firm” or “supportive” isn’t automatically the right choice if you spend most of the night on your side.
Why side sleeping is different
When you sleep on your side, your body’s weight concentrates on two narrow points: the hip and the shoulder. A mattress that’s too firm won’t allow those areas to sink in enough, which can create pressure points and, over time, contribute to hip or shoulder soreness. On the other hand, a mattress that’s too soft can let the hips sink too far, throwing the spine out of alignment. The goal for side sleepers is a surface that cushions those pressure points while still keeping the spine level from shoulders to hips.
What actually helps: comfort layers, not just firmness labels
Firmness is only part of the story. Two mattresses labeled “medium” can feel very different depending on what’s underneath the surface. For side sleepers, a thicker comfort layer — whether memory foam, latex, or a plush pillow-top — tends to matter more than the overall firmness rating, because it’s that top layer doing the work of cushioning hips and shoulders. Shoppers comparing options in our mattress guides will notice that many models aimed at side sleepers use zoned support: softer foam under the shoulders and hips, firmer support under the waist and lower back.
Don’t ignore the base and edges
A mattress can have the right comfort layer and still feel wrong if it’s paired with an unsuitable foundation. A supportive bed frame or foundation that doesn’t sag over time helps preserve the mattress’s intended feel. Side sleepers who share a bed or tend to sleep near the edge should also pay attention to edge support, since a mattress that compresses too much at the perimeter can make the whole surface feel less stable.
Trial periods matter more for side sleepers
Because pressure relief is so personal — it depends on body weight, shoulder width, and how you distribute weight through the night — a mattress that looks great on paper can still feel off in practice. Most online mattress brands now offer trial periods of 90 to 365 nights specifically because pressure and alignment issues often don’t show up until after a few weeks of regular sleep. If you’re testing a new mattress for hip or shoulder pain, give it at least a few weeks before deciding, and pay attention to whether you’re waking up with less soreness than before.
Sizing still counts
Side sleepers who like to stretch out or who share a bed should double-check that their chosen size still leaves enough room to maintain good alignment without crowding. Our bed sizes and dimensions guide breaks down how much space each mattress size actually offers, which is worth reviewing before assuming a queen or king will automatically solve pressure or space issues.
What this means for you
If you’re a side sleeper shopping for a new mattress, prioritize a plush-but-supportive comfort layer over a specific firmness label, look for zoned support if pressure points are a recurring problem, and take full advantage of any trial period to confirm the mattress actually reduces hip and shoulder soreness before committing long-term.
Marcus Reed
Marcus Reed is TalkBeds' Senior Mattress Tester and the person behind most of the hands-on verdicts you'll read on the site. Over more than eight years reviewing beds, he has personally tested 200-plus mattresses across every major category, from budget boxed foam… Full profile & sources →