Upgrade to better sleep— elevate your support and discover the perfect mattress with adjustable bed base compatibility.
Simmons
Beautyrest harmony coastal medium firm mattress
SKU: COASTAL-TMFM
Simmons
Beautyrest harmony coastal medium firm mattress
SKU: COASTAL-TMFM
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$899.99 $1,169.95 Save 23%
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Why You’ll Love It
Firmness
Firm
Soft
1
5
10
Mattress Type
-
adjustable friendly
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innerspring mattress
It's a classic for a reason— durable support and responsive springs combine for your best, undisturbed rest.
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memory foam
With a targeted response to body weight, contouring quality, and hypoallergenic design— brighter mornings await.
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firm
Keep your spine properly aligned and relieve lower back pain without forgoing comfort.


Description
Relieve pressure points as you rest with the targeted support of Beautyrest’s Harmony Coastal Medium Firm Mattress, maintaining an ideal sleep temperature throughout the night. Sustainable, cooling, and comforting, a luxurious Seaqual™ fabric cover promotes cleaner oceans, while the innovative NaturalCool™ cover with Tencel® yarn keeps the mattress fresh and cool at the surface. Flawlessly contouring to your body— AirCool® foam, plush comfort foam, and gel memory foam alleviate pressure-induced aches and pains, allow high airflow, and exceptional breathability. The T1 Pocketed Coil® innerspring unit and foam-encased perimeter stabilize the sleep surface to each edge and ensure that your body receives proper support at the center where it’s needed most.- Made in the USA
- Firm Support with a Medium Firm Comfort
- Seaqual™ Sustainable Fabric (Cover): Seaqual™ captures ocean plastics and transforms them into luxurious new fabrics. Each queen mattress recovers the equivalent of 50 water bottles from our oceans.
- NaturalCool™ (Quilt): Incorporates Dual Cool technology with phase change material and Tencel® yarn embedded into the fabric, allowing you to sleep cool and comfortable throughout the night.
- AirCool® Foam (Comfort Layer): 1” of breathable foam with a channeled design to allow airflow throughout the mattress.
- Plush Comfort Foam (Comfort Layer): ½” of a high-quality polyurethane comfort foam offering a softer feel.
- Beautyrest® Gel Memory Foam (Comfort Layer): ½” of a signature gel-infused memory foam that contours to your body and helps alleviate aches and pains caused by pressure.
- GelTouch® Foam (Comfort Layer): ½” of soft, proprietary gel foam with a uniform distribution of gel throughout the foam to promote consistent adaptability, comfort, and support.
- T1 Pocketed Coil® Technology (Support System): Features a dual-stage coil invented by Beautyrest® to provide targeted support under heavier compression at the center third where your body needs it most.
- BeautyEdge™ Foam Encasement (Edge Support): Provides consistent comfort and stable edge-to-edge support to the sleep surface.
- Made with CertiPUR-US® certified foams without formaldehyde, flame retardants, prohibited phthalates, and heavy metals, as well as meet low-VOC standards for indoor air quality.
- Adjustable friendly innerspring mattress
- Frame Compatibility: Works with most frames, foundations, and adjustable bases. Requires a box spring, other solid surfaces, or a frame with slats no more than 2-inches apart from each other.
- Twin Size Dimensions: 38" W x 75" D x 12.5” H
- Twin XL Size Dimensions: 38" W x 80" D x 12.5” H
- Full Size Dimensions: 53" W x 75" D x 12.5” H
- Queen Size Dimensions: 60" W x 80" D x 12.5” H
- King Size Dimensions: 76" W x 80" D x 12.5” H
- Cali King Size Dimensions: 72" W x 84" D x 12.5” H
- Maximize your space with the stylish, supportive, and convenient design of Malouf’s Waterford Upholstered Platform Storage Bed, available in 5 neutral colors.
- Warranty: 10 year limited


We have purchased all of our bedding for the last 30 years from City Mattress and your products and services have been consistently excellent. Thank you!!!Newton B. Green II