Best Soft Mattresses
Soft doesn't mean unsupportive — the best soft mattresses have a plush, cradling feel at the top while maintaining a firm, stable support core underneath. This distinction is critical: a mattress that's soft all the way through will sag and cause back pain. We ranked soft mattresses (1–5 on the firmness scale) that maintain support integrity despite their plush feel.
How We Ranked
- ✓Firmness 3–5 (soft to medium-soft)
- ✓Firm support core despite soft top
- ✓Excellent pressure relief
- ✓Good motion isolation
Top Picks at a Glance
Compare top 3 side-by-side →| Rank | Mattress | Price | Firmness | Cooling | Trial | Score |
|---|---|---|---|---|---|---|
| #1 | Helix Sunsethybrid | $1,099 $1,374 | 2.5/10 | low | 100n | 6.7 |
| #2 | Helix Moonlight Luxehybrid | $1,899 $2,374 | 3/10 | good | 100n | 8.5 |
| #3 | Amerisleep AS4foam | $1,149 $1,649 | 3.5/10 | average | 100n | 7.8 |
| #4 | Purple Restore Premier Softhybrid | $2,878 $3,598 | 3.5/10 | excellent | 100n | 9.2 |
| #5 | Amerisleep AS5memory foam | $1,599 $2,099 | 4/10 | moderate | 100n | 7.7 |
The Helix Sunset is a hybrid mattress at $1,099 (Queen) with 2.5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to softest model in standard helix line.
- ✓Softest model in standard Helix line
- ✓Excellent pressure relief for lightweight sleepers
- ✓120-night trial
The Helix Moonlight Luxe is a hybrid mattress at $1,899 (Queen) with 3/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to softest helix luxe — maximum pressure relief for side sleepers.
- ✓Softest Helix Luxe — maximum pressure relief for side sleepers
- ✓Tencel moisture-wicking cover
- ✓Zoned pocketed coils prevent bottoming out under soft comfort layers
The Amerisleep AS4 is a foam mattress at $1,149 (Queen) with 3.5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to medium-soft feel excellent for side sleepers who need shoulder and hip relief.
- ✓Medium-soft feel excellent for side sleepers who need shoulder and hip relief
- ✓HIVE® hex cutouts in the base layer provide zoned support
- ✓Plant-based Bio-Pur foam more breathable than traditional memory foam
The Purple Restore Premier Soft is a hybrid mattress at $2,878 (Queen) with 3.5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to 4" gelflex grid — the thickest grid layer across the purple lineup for maximum pressure relief.
- ✓4" GelFlex Grid — the thickest grid layer across the Purple lineup for maximum pressure relief
- ✓Grid technology simultaneously supports and relieves — unique to Purple
- ✓Exceptional temperature regulation — open grid structure doesn't trap heat
The Amerisleep AS5 is a memory foam mattress at $1,599 (Queen) with 4/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to plush pressure relief.
- ✓Plush pressure relief
- ✓Plant-based foam
- ✓20-year warranty
The Purple Luxe is a hybrid mattress at $4,999 (Queen) with 4.5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to 4" gelflex grid — most pressure-relieving purple mattress ever made.
- ✓4" GelFlex Grid — most pressure-relieving Purple mattress ever made
- ✓Premium-grade coil system with reinforced edges
- ✓Virtually zero heat retention
The Tempur-Pedic TEMPUR-LuxeAdapt Soft is a foam mattress at $4,299 (Queen) with 2.5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to thickest tempur layer in the non-cooling lineup — maximum plush comfort.
- ✓Thickest TEMPUR layer in the non-cooling lineup — maximum plush comfort
- ✓Zero motion transfer — exceptional for light sleepers sharing a bed
- ✓SmartClimate dual cover is washable
The Casper Snow is a foam mattress at $2,295 (Queen) with 5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to snowtech cover with phase-change material — measurably cooler surface.
- ✓SnowTech cover with phase-change material — measurably cooler surface
- ✓Multiple cooling layers including HeatDelete bands
- ✓Classic Casper zoned support preserved in cooling version
The Cocoon by Sealy Chill Memory Foam is a foam mattress at $549 (Queen) with 5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to phase-change cooling cover provides immediate cool-to-touch sensation.
- ✓Phase-change cooling cover provides immediate cool-to-touch sensation
- ✓Sealy manufacturing quality behind a DTC price point
- ✓100-night trial and 10-year warranty from an established brand
The GhostBed Luxe is a foam mattress at $1,555 (Queen) with 5/10 firmness. Its plush comfort layers provide the cradling softness side sleepers need while the firm base prevents body-impression sagging. It earns its place thanks to 7-layer cooling system — one of the most aggressive cooling approaches in foam mattresses.
- ✓7-layer cooling system — one of the most aggressive cooling approaches in foam mattresses
- ✓Ghost Ice cover provides immediate cool-to-touch sensation and maintains it
- ✓25-year warranty — exceptional for a foam mattress
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