2026's Top 10 Soft Mattresses

Frequently
Asked Questions

• What makes a mattress "soft"?

  A soft mattress is typically rated between 1–4 on the firmness scale (where 10 is the firmest). Soft mattresses have extra comfort layers — often made of memory foam, latex, or pillow-top padding — that allow your body to sink in slightly and conform to your curves. This provides deep pressure relief for your hips, shoulders, and joints, making soft mattresses especially popular among side sleepers and lighter-weight individuals.

• Who should sleep on a soft mattress?

  Soft mattresses are best suited for side sleepers, lightweight sleepers (under 130 lbs), and those who experience chronic pain in pressure-point areas like hips and shoulders. Side sleepers in particular benefit from the contouring cushion a soft mattress provides, as it allows the spine to stay aligned while relieving stress on wider body parts. Couples where one partner is a side sleeper also frequently choose a plush or soft mattress.

• Do soft mattresses cause back pain?

  Not inherently — the key is finding the right level of softness for your body type and sleep position. A mattress that is too soft for a heavier sleeper or a stomach sleeper can cause the hips to sink too deeply, leading to spinal misalignment and back pain over time. However, for side sleepers and lighter individuals, a well-constructed soft mattress with adequate support layers underneath the comfort layers can relieve back pain by properly cushioning the body's pressure points.

• How long do soft mattresses last?

  A high-quality soft mattress typically lasts 7–10 years, though this can vary based on the materials and construction. Memory foam soft mattresses may show body impressions sooner than latex or hybrid soft mattresses. To maximize the lifespan of your soft mattress, rotate it every 3–6 months (if it's not a one-sided mattress), use a supportive bed frame or foundation, and protect it with a mattress cover. The brands on our list all carry strong warranties — several offering lifetime coverage — so your investment is well protected.

• What size soft mattress should I buy?

  The right mattress size depends on your living situation, how many people share the bed, and your room dimensions. A Twin or Twin XL is ideal for single sleepers in smaller spaces. A Full is great for a solo sleeper who wants more room. A Queen is the most popular size for couples, offering a good balance of space and affordability. A King or California King gives couples maximum space and is ideal if you share a bed with a pet. Many of the soft mattresses on our list are available in all standard sizes, so you can pick the perfect fit for your bedroom.