Best Mattresses Under $400 in 2026: Quality Sleep at an Affordable Price

A comfortable and supportive mattress doesn’t have to be expensive. Whether you prefer memory foam, hybrid, or innerspring, there are plenty of great mattresses under $400 that provide pressure relief, motion isolation, and durability. The right mattress can improve sleep quality by supporting your body and reducing discomfort—all within your budget. This guide will help you find the best mattress under $400 based on your sleep position, firmness preference, and comfort needs.

Key Highlights

• High-quality mattresses for under $400
• Memory foam, hybrid, and innerspring options available
• Pressure-relieving and motion-isolating designs for better sleep
• Twin, Full, Queen, and some King sizes available

Explore The Best Mattresses Under $400

Types of Mattresses Under $400

In this price range, you can find various mattress types, each offering different levels of comfort and support:

Type	Pros	Cons
Memory Foam	Conforms to body shape, great for pressure relief, absorbs motion	May retain heat, slight initial odor
Hybrid	Combines foam and coils for support and breathability	Heavier than foam models
Innerspring	Bouncy, breathable, good edge support	Less contouring, can be noisy over time
Latex (Blended/Synthetic)	Hypoallergenic, responsive, durable	Firmer feel, limited availability under $400

Important Aspects When Choosing The Best Mattress Under $400

Firmness Level

Your sleep position plays a major role in choosing the right firmness level:

• Soft (Plush) – Best for side sleepers, as it cushions shoulders and hips.
• Medium – Ideal for combination sleepers who need balanced support.
• Firm – Best for back and stomach sleepers, keeping the spine aligned.

Mattress Size

Many mattresses under $400 come in various sizes:

• Twin/Twin XL – Ideal for kids, teens, and smaller spaces.
• Full – Great for single sleepers needing more space.
• Queen – The most popular size for couples and single adults.
• King – Available in some models but harder to find in this price range.

Cooling Features

If you sleep hot, look for:

• Gel-infused memory foam to absorb heat.
• Breathable covers for moisture control.
• Hybrid models with coils for improved airflow.

Motion Isolation

If you share a bed, motion isolation is key. Memory foam and hybrid mattresses help absorb movement so you won’t disturb your partner.

Durability and Warranty

A good mattress in this price range should last 5-8 years. Look for brands that offer at least a 10-year warranty.

Tips for Using a Mattress Under $400

• Allow full expansion – Many mattresses are compressed in a box and need 24-72 hours to fully expand.
• Use a supportive base – A platform bed or box spring helps prevent sagging.
• Rotate it regularly – Rotating every 3-6 months promotes even wear.
• Consider a mattress topper – If it feels too firm, a foam topper can add extra comfort.

Popular Questions About Mattresses Under $400

Is $400 enough for a high-quality mattress?

Yes! Many memory foam, hybrid, and innerspring mattresses in this price range offer good comfort, durability, and support for long-term use.

What is the best mattress type for side sleepers under $400?

A medium-soft memory foam or hybrid mattress is best, as it relieves pressure on shoulders and hips while offering good support.

Can I get a King-size mattress for under $400?

Yes, but options are limited. Most mattresses in this range are Twin, Full, or Queen, though some affordable King-size foam models are available.

How long will a mattress under $400 last?

With proper care, a mattress under $400 should last 5-8 years, depending on the materials and usage.

Finding a comfortable and supportive mattress under $400 is easier than you think. Whether you need memory foam, hybrid, or innerspring, there are plenty of budget-friendly options that provide great sleep without overspending.