Simmons Beautyrest

BeautySleep Coastline 12" Innerspring Mattress in a Box (Available in Firm & Plush Pillow-Top)

|19 ratings
Item # 990518261
Current price is $315.00
Prices may vary in club and online
BeautySleep Coastline 12" Innerspring Mattress in a Box (Available in Firm & Plush Pillow-Top)BeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow TopBeautySleep Coastline 12 Innerspring Mattress in a Box Available in Firm Plush Pillow Top
SizeTwin
StyleFirm
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Highlights

  • Available in Twin, Full, Queen, King sizes with Medium and Plush Pillow-Top options
  • Covered by BeautySleep's 100 Night In-Home Trial
  • Mattress ships in a box and is ready to use in minutes
  • An 8" layer of pocketed coils provides comfortable support with additional foam layers
  • Compatible with most bed frames, box springs, platforms, and adjustable foundations
  • Proudly 100% USA assembled with CertiPUR-US certified foams

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Sealy ICON 12" Memory Foam Mattress-in-a-Box
current price Now $299.00, Was $349.00

Sealy ICON 12" Memory Foam Mattress-in-a-Box

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BeautySleep Coastline 12" Innerspring Mattress in a Box (Available in Firm & Plush Pillow-Top)
BeautySleep Coastline 12" Innerspring Mattress in a Box (Available in Firm & Plush Pillow-Top)
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About this item

Product details

Comfortable Sleep from the First Night

The 12” BeautySleep® Coastline Quilted Mattress in a Box is crafted to provide exceptional comfort and support. Featuring a soft quilted surface and breathable foams, this mattress ensures airflow for a cool and refreshing sleep. Its antimicrobial layer* helps maintain freshness, while the Original Beautyrest® Pocketed Coil® Technology delivers consistent, reliable support.

Advanced Foam and Coil Technology

Experience the benefits of AllCool™ Gel Memory Foam, which contours to your body to relieve pressure, and AirCool® Foam with a channeled design for enhanced airflow. The 8" layer of Original Beautyrest® Pocketed Coil® Technology, combined with supportive base foam, offers stable and comfortable support throughout the night.

Firm or Plush Pillow-Top Options

Choose between a firm feel for structured support or a plush pillow-top for extra cushioning and reduced motion transfer. The plush option includes AllCool™ Gel Foam for added cooling comfort. Both options feature CertiPUR-US® Certified Foams, ensuring quality materials you can trust.

Convenient Setup and Compatibility

This mattress ships rolled in a box for easy setup—simply unbox, unwrap, and unroll. It is compatible with platform foundations, solid surface bed frames, and adjustable bases, offering flexibility to suit your bedroom needs. With a height of 12", it provides a traditional mattress feel.

100 Night In-Home Trial

Enjoy up to 100 nights to adjust to your new mattress, risk-free. If you're not completely satisfied, return it for a full refund. For warranty concerns, contact the BeautySleep Customer Service team at (888) 802-2948. Elevate your sleep experience with over a century of expertise in crafting quality mattresses.
  • Firm Feel – Structured support for a restful sleep.
  • Plush Pillow‑Top – Extra cushioning for softer comfort.
  • 8" Original Beautyrest® Pocketed Coil® Technology – Consistent, comfortable support.
  • AllCool™ Gel Memory Foam – Pressure relief and contouring comfort.
  • AirCool® Foam – Promotes airflow for a cooler sleep.
  • CertiPUR‑US® Certified Foams – Quality materials you can trust.
  • Antimicrobial Layer – Helps keep your mattress fresh.*
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Specifications

Firm Mattress

  • Twin: 38" x 75", 12" height, 80 lbs
  • Full: 53" x 74.5", 12" height, 85 lbs
  • Queen: 60" x 80", 12" height, 86 lbs
  • King: 76" x 80", 12" height, 90 lbs

Plush Pillow Top Mattress

  • Twin: 38" x 75", 12" height, 85 lbs
  • Full: 53" x 74.5", 12" height, 90 lbs
  • Queen: 60" x 80", 12" height, 92 lbs
  • King: 76" x 80", 12" height, 98 lbs

Member ratings & reviews

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Showing 1-3 of 19 reviews

Feb 3, 2026
Alexanderbean123
5 out of 5 stars
5 out of 5 stars review

Great for body pains.

The mattress arrived in the afternoon in completely vacuum sealed packaging. We opened the seal and were sleeping on the mattress that same night. The firmness is perfect for my wife with chronic pain. It wasn't long before we knew we found a great mattress. We appreciate the ease of process and will be recommending this particular mattress in the future!

Review from Beautyrest
Helpful?1JJA8SVYN0DB19924152301
Feb 6, 2026
Luke1010
5 out of 5 stars
5 out of 5 stars review

Comfortable, Supportive, Cozy, and Refreshing

Never realized the difference a great mattress can make. Sleeping much better now and wake up refreshed and ready for the day! The bed feels thoughtfully designed because it is strong and supportive yet comfy and cozy! I also really liked that the bed shipped in a box that was much easier to move around the house than a full mattress and just opened it up in the bedroom! Love it and will always choose Beauty Sleep!

Review from Beautyrest
Helpful?1JJA8SVYN0DB19924152301
Jan 26, 2026
Duke32
5 out of 5 stars
5 out of 5 stars review

Great Product!

I recently got this mattress and it has exceeded my expectations. The quality is great! I am a bigger guy and provides plenty of support and I don't feel like I'm dipping all the way through the mattress. It's very comfortable on my back and hips. I don't sleep hot like I used to. Honestly, I am very impressed and would definitely recommend this mattress.

Review from Beautyrest
Helpful?1JJA8SVYN0DB19924152301

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