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Beautyrest Core Level One Medium Mattress

Original price $599.00 - Original price $1,259.99
Original price $599.00
$599.00
$599.00 - $1,259.99
Current price $599.00
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Free Curbside Shipping: 2 Weeks
White Glove Delivery: 3 Weeks
White Glove Delivery + Removal: 3 Weeks

The Beautyrest Core Level One Medium Mattress pairs 875 Density Pocketed Coil® Technology with Beautyrest® ActiveResponse™ Memory Foam on a classic quilted surface, in a balanced medium feel built for all sleep positions. Individually wrapped coils, CertiPUR-US® certified foams, and Beautyrest's 10-Year Limited Warranty back a 12.5" mattress that's the entry point into the Beautyrest line.

Beautyrest Core Level One Medium Mattress

Classic Quilted Comfort, Perfectly Balanced

The Core Level One Medium is part of Beautyrest's entry-level Core collection: 875 Density Pocketed Coil® Technology working together with Beautyrest® ActiveResponse™ Memory Foam under a classic, quilted surface. The Medium feel splits the difference between support and cushioning — not too firm, not too soft — for sleepers who want balanced, everyday comfort.

It's built with individually wrapped, head-to-toe pocketed coils for targeted support and true motion separation, plus contouring memory foam for pressure relief, all backed by CertiPUR-US® certified foams and Beautyrest's 10-Year Limited Warranty.

Built For

Since 1925

Pioneers of Pocketed Coil® Technology

Beautyrest invented the pocketed coil — individually wrapped coils that move independently for targeted support and true motion isolation, so movement on one side of the bed stays there.

Sleep Position

All Sleepers

The Medium feel balances cushioning and support, so back, stomach, and side sleepers all find a comfortable, even surface.

875 Density Support

Individualized, Motion-Isolating Support

875 Density Pocketed Coil® Technology gives each coil room to move independently, so the mattress responds to your body's pressure points without disturbing your partner's side of the bed.

Why You'll Love the Core Level One Medium

  • Individualized coil support — 875 Density Pocketed Coil® Technology responds to your body, coil by coil
  • Balanced medium feel — comfortable for back, stomach & side sleepers
  • True motion separation — movement on one side stays there
  • Classic quilted surface — familiar, everyday mattress feel
  • Consistent 12.5" profile — fits standard frames, platform beds, and adjustable bases
  • Contouring pressure relief — Beautyrest® ActiveResponse™ Memory Foam eases aches and pains
  • CertiPUR-US® certified foams — made without formaldehyde, flame retardants, or heavy metals
  • 10-Year Limited Warranty

Sizes & Specifications

Available Sizes
  • Twin
  • Twin XL
  • Full
  • Queen
  • King
  • Cal King
  • Split King
  • Split Cal King
Specifications
  • Construction: Quilted Innerspring — 875 Density Pocketed Coil® Technology + Beautyrest® ActiveResponse™ Memory Foam
  • Mattress Height: 12.5 inches
  • Feel: Medium
  • Certification: CertiPUR-US® certified foams
  • Warranty: 10-Year Limited Warranty

Engineered for Medium, All-Night Support

Beautyrest Core Level One Medium cutaway showing coil and foam construction
Construction

What's Inside

  1. 1 Classic Quilted Surface — a traditional quilted top for a familiar, everyday mattress feel.
  2. 2 875 Density Pocketed Coil® Technology — individually wrapped, head-to-toe coils that flex independently for targeted support and true motion separation.
  3. 3 Beautyrest® ActiveResponse™ Memory Foam — contours to the body for pressure relief designed to help alleviate aches and pains.
  4. 4 CertiPUR-US® Certified Foams — made without formaldehyde, flame retardants, prohibited phthalates, or heavy metals, and meeting low-VOC standards for indoor air quality.
Feel & Support

Built for a Medium Feel

This is the Medium option in the Core Level One line: a balanced mix of coil support and ActiveResponse™ Memory Foam cushioning, without leaning firm or plush.

Why it matters:

  • Balanced sink — comfortable for a wide range of sleep positions
  • Even support — coils and foam share the work evenly
  • Everyday comfort — a dependable, all-around feel
Profile Height

A Consistent 12.5" Profile

The Core Level One Medium holds a 12.5" profile across the collection.

Why it matters:

  • Consistent height — the same profile no matter which size you choose
  • Frame-friendly — fits standard bed frames, platform beds, and adjustable bases
Made to Last

Certified Foams, Backed for the Long Haul

CertiPUR-US® certified foams & 10-Year Limited Warranty: The Core Level One Medium uses foams made without formaldehyde, flame retardants, prohibited phthalates, or heavy metals, and is backed by Beautyrest's 10-Year Limited Warranty.

MATTRESS DIMENSIONS

  • Twin

    38" wide x 75" long
    12.5" High

  • Twin XL

    38" wide x 80" long
    12.5" High

  • Full

    54" wide x 75" long
    12.5" High

  • Queen

    60" wide x 80" long
    12.5" High

  • King

    76" wide x 80" long
    12.5" High

  • Cal King

    72" wide x 84" long
    12.5" High

  • Split King (2 mattresses)

    38" wide x 80" long (each piece)
    12.5" High

  • Split Cal King (2 mattresses)

    36" wide x 84" long (each piece)
    12.5" High

*Dimensions of each individual mattress may vary slightly.

SPECIFICATIONS

  • Construction: Quilted Innerspring — 875 Density Pocketed Coil® Technology support core + Beautyrest® ActiveResponse™ Memory Foam comfort layer, classic quilted surface
  • Mattress Height: 12.5 inches
  • Feel: Medium
  • Certification: CertiPUR-US® certified foams
  • Warranty: 10-Year Limited Warranty
  • Care: Spot clean only — use a clean white cloth with a mild oxi-based cleaning solution, blot (don't rub), and air dry completely before use. Use a mattress protector; do not apply liquids directly to the mattress. Rotate periodically for even wear.

10-Year Limited Warranty

COVERAGE

Beautyrest® or Simmons® mattress or foundations used with proper support is protected by a 10 year limited manufacturer’s warranty. The limited warranty covers manufacturing defects in your Beautyrest® or Simmons® mattress or foundation including faults in materials or manufacturing defects in the removable fabric cover available on select models. Replacement of one piece due to manufacturing defect does not automatically result in the replacement of any other piece. This limited warranty is provided only to the original purchaser and is not transferable.

EXCLUSIONS

    This warranty does not apply to and excludes:

    Consumer firmness/comfort preference.

    Normal changes in softness or recovery time of high density foams, including memory foam, due to normal use, temperature, or humidity.

    Normal body impression(s) as indicated by your warranty code (see chart).

    Consumer bed height/weight preference.

    Cover (fabric) and handles.

    Corner guards.

    Bent border/grid wires.

    Burns, cuts or tears.

    Vermin infestations.

    Mattresses or foundations displaying stains or soil that reasonably indicates the presence of potentially dangerous bodily fluids, blood borne pathogens or other substances that could cause injury.

    Mattresses used with an inadequate foundation and/or support system.

    Adjustable foundations (see owner’s manual for details on warranty coverage).

    Merchandise sold “as-is”, “distressed” or “floor model/sample”.

    Claims made outside the 50 United States, District of Columbia, Puerto Rico or U.S. Virgin Islands.

    Transportation, inspection, or removal costs of product, except in California.

TERM

The warranty coverage runs from the original date of purchase. Replacement of the mattress or foundation does not extend its limited warranty or begin a new limited warranty period. Your warranty period is based on the code printed on your white law label as indicated on the Warranty Code Chart below.

Warranty Code on Law Label B J H A P
Total Limited Warranty 1 Year 3 Year 5 Year 10 Year 10 Year
Normal Body Impression 1 1/2” or less 1 1/2” or less 1 1/2” or less 1 1/2” or less 3/4” or less

Please refer to Beautyrest.com or Simmons.com for additional codes.

SERVICE

If your Beautyrest® or Simmons® mattress or foundation fails due to a manufacturing defect, the exclusive remedy under this warranty will be replacement of the defective product in the U.S., Puerto Rico or U.S. Virgin Islands. If the Beautyrest® or Simmons® product you purchased is discontinued at the time of replacement, a current model of comparable quality and value will be selected.

To receive service under the terms of this warranty contact your original Beautyrest® or Simmons® dealer. If your original Beautyrest® or Simmons® dealer is no longer in business or you have moved outside the service area, please contact Simmons Consumer Services at customerassistance@simmons.com. A copy of original bill of sale is needed to determine original date of purchase. Model name label and law label must be provided to identify the bedding and validate this warranty.

Your Rights Under State Law

This warranty gives you specific rights, and you may have other rights, which vary from state to state. This warranty is extended only to the original purchaser from Simmons Bedding Company or its authorized dealers.