Best soft mattresses under $600
Researched by Deal.ai's shopping agent across stores on November 2, 2026. Prices below are today's.
Top pick: the 12 Inch Limited Edition Plush Queen — a true plush memory-foam bed in a standard queen, so it's the safest soft-feel choice for a couple or anyone who wants to sink in a little.
Who the others suit:
- Ashley Elite Springs Plush — if you want a plush top over springs for more bounce and edge support.
- Posture Premium Plush — a hybrid feel for back and side sleepers who want softness without a memory-foam hug.
- QOFYU Plush Queen — the budget route, with a big review base to judge it by.
- Amazon Basics Soft Plush Memory Foam — a simple, low-risk starter mattress for a guest room.
- Ashley Express Anniversary Edition Plush — twin size, so best for a kid's or spare room.
Skip the medium or unspecified "12 inch" boxes if you truly want soft — they read firmer than a plush.
The picks
- #1
12 Inch Limited Edition Plush Queen Mattress
- Firmness Level: Plush
- Mattress Type: Memory Foam
- Type: Mattress
- $482.58








