What's the difference between Beautyrest Black models?

The main differences are firmness and comfort layers. The K-Class is the softest (plush pillow top), the C-Class is medium with the best cooling, the original Black is medium-firm, and the L-Class is the firmest for maximum support. All share the T3 Pocketed Coil system and BlackICE cooling technology.

Which Beautyrest Black is best for side sleepers?

The K-Class is the clear winner for side sleepers. Its plush pillow top and 16.5-inch profile provide the deepest pressure relief for shoulders and hips. The C-Class (medium) is a good second choice for side sleepers who want some firmness.

Are Beautyrest Black mattresses worth the price?

If you value luxury hotel-quality sleep, yes. All Black models feature premium materials (T3 coils, BlackICE cooling, natural latex) and white glove delivery. They consistently outperform competitors in cooling, edge support, and durability. The original Black at $2,199 offers the best value in the lineup.

Which Beautyrest Black sleeps the coolest?

The C-Class has the highest cooling rating (9.4/10) with BlackICE 4.0 technology and RightTemp memory foam. The K-Class is a close second with dual-sided BlackICE 4.0 cooling.

Do Beautyrest Black mattresses need a box spring?

No. All Beautyrest Black models work on any flat, sturdy surface — platform beds, adjustable bases, slatted frames, or a box spring. They do not require a box spring specifically.

2026 Comparison Guide

Beautyrest Black: All Models Compared

Side-by-side comparison of the original Black, K-Class, C-Class, and L-Class — find the perfect luxury mattress for your sleep style.

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Quick Pick: Which Black Is Right for You?

The Original

Beautyrest Black

9/ 10

Back sleepers wanting luxury support

$2,199$2,999

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Ultra-Plush Pillow Top

Black K-Class

9.2/ 10

Side sleepers wanting cloud-like comfort

$3,499$4,299

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Best Cooling

Black C-Class

9.1/ 10

Hot sleepers and combination sleepers

$2,999$3,699

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Extra Firm

Black L-Class

8.9/ 10

Back/stomach sleepers and heavier individuals

$2,799$3,499

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Head-to-Head Ratings

Category	Black	Black K-Class	Black C-Class	Black L-Class
Overall	9	9.2	9.1	8.9
Comfort	9.1	9.5	9	8.5
Support	9.3	8.8	9.2	9.6
Cooling	9	9.3	9.4	9
Edge Support	9.4	9.2	9.3	9.5
Motion Isolation	8.7	9	8.9	8.5
Durability	9.2	9.3	9.2	9.4
Value	8.4	8	8.3	8.4

Specifications Comparison

Spec	Black	Black K-Class	Black C-Class	Black L-Class
Price (Queen)	$2,199	$3,499	$2,999	$2,799
Firmness	Medium-Firm (6.5/10)	Plush (4/10)	Medium (6/10)	Firm (8/10)
Height	14"	16.5"	14.5"	13.75"
Type	Hybrid	Hybrid (Pillow Top)	Hybrid	Hybrid
Trial Period	100 nights	100 nights	100 nights	100 nights
Warranty	10 years	10 years	10 years	10 years
Delivery	White Glove	White Glove	White Glove	White Glove
Cooling Tech	BlackICE	BlackICE 4.0 (dual)	BlackICE 4.0	BlackICE

Our Recommendations by Sleeper Type

Side Sleepers

Pick: K-Class

The plush pillow top provides the deepest pressure relief for shoulders and hips.

Back Sleepers

Pick: Black (Original) or C-Class

Medium-firm support keeps the spine aligned without excessive sinking.

Hot Sleepers

Pick: C-Class

Highest cooling rating (9.4/10) with BlackICE 4.0 and RightTemp foam.

Best Value

Pick: Black (Original)

At $2,199, it delivers 90% of the luxury at the lowest price point.

Beautyrest Black: All Models Compared