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Sleep Position Is the Most Important Factor in Choosing a Mattress
A mattress that’s perfect for a back sleeper can cause shoulder pain for a side sleeper. Getting this right means understanding what spinal alignment your position requires — and choosing a mattress that delivers it.
Best for Side Sleepers: Helix Midnight
Side sleepers need cushioning at the hip and shoulder to prevent pressure buildup, but still need enough lumbar support to keep the spine aligned. The Helix Midnight’s medium feel (4-5/10 firmness) hits the sweet spot. Memory foam comfort layer cushions the joints while the pocketed coil base keeps the spine neutral. Best choice for average-weight side sleepers.
Best for Back Sleepers: Saatva Classic Luxury Firm
Back sleepers need a mattress that fills in the lumbar curve without letting the hips sink too deep. The Saatva Luxury Firm (medium-firm, 6-7/10) gives just enough give at the shoulders and hips while keeping the spine in a neutral position. The lumbar enhancement crown in the support layer provides targeted lower back support.
Best for Stomach Sleepers: Avocado Green (No Pillow Top)
Stomach sleeping is the hardest position to support — too soft a mattress causes the pelvis to sink and the spine to hyperextend, causing lower back pain. The Avocado Green without pillow top (firm natural latex) keeps the spine flat and prevents pelvic sinkage. Best for stomach sleepers of average to heavy weight.
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Best for Combination Sleepers: Layla Hybrid
Combination sleepers (those who change positions throughout the night) need a responsive mattress that makes repositioning easy. The Layla Hybrid’s copper-infused memory foam is faster-responding than standard memory foam, and the coil system adds bounce. The flippable design lets you try both soft and firm sides. Easy to move around on, no sinking feeling.
Firmness Guide by Sleep Position
Side sleepers: 3–5/10 (soft to medium). Back sleepers: 5–7/10 (medium to medium-firm). Stomach sleepers: 6–8/10 (medium-firm to firm). Combination sleepers: 4–6/10 (medium). Heavier sleepers should add 1–2 points to these ranges; lighter sleepers can subtract 1 point.