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King Beautyrest Black K-Class Medium Mattress

Special Price $3,999.99 Regular Price $4,899.99

Receive $200 Instant Gift1 with purchase of a Beautyrest Black mattress. Add bedding or an adjustable base to cart. Use code 200FREE at checkout.

King Beautyrest Black K-Class Medium Mattress

The Beautyrest Black BRB K Class Medium is the best medium Mattress in the Beautyrest Black collection. We rate this mattress a 7 on our 1 to 10 comfort scale with 10 being firmest, which puts it right in between the medium and plush C Class mattresses. This model features the new BlackICE 4.0, a design that consits of four components: A Cool-to-Touch Fabric, Cool materials right below to the fabric to enhance heat disapation, breathable, heat wicking fibers, and anti-microbial silver additives to draw heat away from your body. The K Class mattresses are up to 20% cooler and provide Up to 30% better pressure point relief when compared to the L Class. The RightTemp memory foam that Beautyrest designed with conductive materials to pull the excess heat away from your body. The K Class models have an included layer of 2K nano Coils. These are 2000 micro coils designed to provide enhanced conformability and pressure relief, with individulized back support for each unique individual. The BeautyEdge offers more edge support to provide a firmer and more stable edge-to-edge sleeping area. The Beautyrest Gel Memory Foam in this model provides advanced pressure relief without that "stuck" feeling you get with a lot of traditional memory foams. The T3 Pocketed Coil offers top of the line support with enhanced support and pressure relief. This model is adjustable base compatible. The Beautyrest Black K Class Medium is perfect for any sleeper looking firmer mattress with top of the line cooling and comfort. Deep pocketed sheets are recommended for this model.


Comfort Type

  • Medium
  • Comfort Scale 7

Quilting Layers

  • BlackICE 4.0

Comfort Layers

  • 0.5" Plush Comfort Foam
  • 1" Medium Comfort Foam
  • 1" RightTemp Memory Foam
  • 1" 2K Nano Coils
  • 1" Beautyrest Gel Memory Foam

Support System

  • T3 Pocketed Coil Technology
  • 360 degree 3" foam encased edge

Box Spring (Optional)

  • BR Black Foundation: Black Upholstery
  • Availible in 9" or 5" Height
  • Regular Box Spring 9"
  • Low Profile Box Spring 9"

Adjustable Base (Optional)


  • 10 Year Non-ProRated Warranty Against Manufacturer's Defects
  • No Flip, No Rotate

Made in:

  • USA


Size Height Width Length
Twin XL 14.5" 38" 80"
Full 14.5" 54" 75"
Queen 14.5" 60" 80"
King 14.5" 76" 80"
Cal King 14.5" 72" 84"
Size Coil Count
Twin XL 513
Full 647
Queen 815
King 1051
Cal King 1117
More Information
UPC Code889152451997
mattress_thickness14" - 16"
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