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Serta iComfortECO Foam F40HD 15" Medium Mattress

Save $500.00 Save $500.00
Original price $2,499.00
Original price $2,499.00 - Original price $3,599.00
Original price $2,499.00
Current price $1,999.00
$1,999.00 - $3,099.00
Current price $1,999.00
Save up to $900 on Serta® iComfortECO™ when paired with a Motion Perfect Adjustable Base
🎁Free $599 Bedding Bundle (includes Mattress Protector, 2 Cooling Pillows & Sheet Set)
0 Days | 8 Hours | 0 Minutes | 1 Seconds
Size: Twin XL

Choose Your Foundation

SnoZzzze With Assurance

130 Night Comfort Trial

We offer a 130 comfort trial to ensure you're sleeping on the perfect bed. If not, we'll work with you until we find the one that is.

110% Low Price Guarantee

Found it cheaper elsewhere? NO PROBLEM, We will match the price PLUS EXTRA 10%.

Customer Support 24/7

Our Sleep Specialists are extensively trained to ensure that you experience your greatest rest. You can get in touch with us through chat, call, or an in-store visit.

10-Year Warranty

We believe in the quality of our products and are committed to our customers who believe in them. All Serta mattresses include a 10-year warranty.

Free shipping

Shipping is fast and free*. Your order is dispatched in 1 - 2 business days.

Why Our Sleep Specialists Recommend it

“ The supportive, pressure-relieving foam mattress is designed for cool, comfortable, and restorative sleep. Great choice for side sleeper

- Gary .B, Sleep Specialists


Side sleeper


Back Support
Pressure Relief
Motion isolation
Adjustable Base Compatible


Serta iComfortECO Foam F40HD 15" Medium Mattress offers layers of premium foam contouring to the body and a cooling upgrade. Its eco-friendly iComfortECO™ Foam F40HD delivers restful sleep with reduced environmental impact. Its CoolTemp™️ Cover, crafted from recycled plastic, promotes breathability and cooling. Terra Fusion™️ Memory Foam also reduces motion transfer, relieving pressure and providing balanced support for any sleep position. High-density memory foam conforms to the body for superior comfort. Assembled in the U.S.A., this mattress provides lasting comfort, motion reduction, and a more sustainable lifestyle. Serta iComfortECO F40HD 15" Medium Mattress is an eco-friendly and sustainable solution for a restful night's sleep. The cooling upgrade helps promote breathability, while the layers of foam contour to your body and relieve pressure. The U.S.A. assembly ensures a mattress with sturdy construction and lasting comfort.


  • Medium Feel 
  • Foam 
  • Durable, edge-to-edge support for any sleep position
  • Plant-based foam contours and cradles your body
  • A cool-to-the-touch, breathable cover
  • Designed to minimize the impact of your partner's movement
  • Ideal for All Sleeping positions 


Adjustable Base Friendly

This mattress is adjustable base friendly, offering tailored support to reduce snoring, aid with pain, and increase comfort while reading or watching TV. Its adjustable design provides optimal comfort and posture, so you can enjoy restful sleep.

serta icomfortECO Foam F15GL Firm MATTRESS with an adjustable base - Mattress Mars

Cooling Technology

CoolTemp™ Cover Powered by REPREVE®

 This innovative cover is crafted from recycled plastic bottles, designed to provide a temperature-neutral sleep surface. Its high-durability ensures a long lifespan, allowing you to enjoy a cool and breathable slumber experience for years.

cooling foam for serta icomfortEco Firm Mattress - Mattress mars


Balanced Support Foam

 This mattress offers a perfect equilibrium of comfort and stability, no matter the firmness level desired. Its advanced temperature-regulating technology helps guarantee sleeping comfort for all night.supportive foam- mattress mars

Pressure Relief

 TerraFusion™ Foam

This foam is composed of nearly 30% plant-based material, conforming to your body and providing targeted pressure relief that helps to maintain spinal alignment and promote restful sleep.


Motion Separation

 Serta Foam Core

 iComfortEco Foam F40HD 15" Medium Mattress offers uniform support regardless of your preferred sleep position, providing resilience and durability. Its cutting-edge design reduces motion transfer for a more tranquil slumber.

edge to edge supportive foam - icomfort eco f10 medium mattress - mattress mars



 A breathable construction enables air flow, enabling regulation of body temperature and prevention of heat buildup, allowing for a cozy sleep ambience. This promotes improved air quality through optimal airflow and air exchange.

CertiPUR-US® Certified

 CertiPUR-US® certified foam is independently tested and certified free from harmful chemicals and gasses for safety and comfort. 

CertiPUR-US® certified icon - Mattress mars


What goes into your iComfortECO Mattress

1. CoolTemp™ Cover Powered by REPREVE® | 2. TerraFusion™ Foam | 3. Balanced Support Foam

closer look to the icomfort eco mattress - mattress mars


 About Serta

 A champion of comfort for all, Serta, Inc. (“Serta”) has pioneered sleep innovation for more than 90 years, bringing quality products to more than 150 countries worldwide. Every bed across the Serta®portfolio is designed to provide superior comfort, including the award-winning Perfect Sleeper®,  iComfort® and Arctic collections.

Serta takes a consumer-centric approach in everything it does, with help from its beloved Serta Sheep, the true curators of Serta comfort. In addition to Serta products available to consumers, Serta is a leading provider of beds to the hospitality industry, including several of the world’s largest hotel chains.


Standard Shipping. This item is available for local pick up at Mattress Mars Located at 4060 Eastgate Drive, Unit A-101. Orlando, FL 32839. Call Now for more information at 407-413-5615.


10-Year Limited Warranty

Serta® mattresses or foundations used with proper support are protected by a 10 year limited manufacturer’s warranty. Serta products are warrantied against manufacturing defects in workmanship and material (excluding covers and handles, except for handles on iSeries and equivalent level mattresses).


  • Comfort Preference
  • Bedding sold “as is”, or floor samples, or bedding purchased from second hand parties, non-retail establishments or received as a promotional item.
  • Bedding height
  • Corner guards
  • Bent perimeter border rods due to moving or bending the sleep set for innerspring models
  • Replacement of another piece in a sleep set unless it is also defective
  • Damage of the mattress or foundation due to misuse or abuse
  • Mattress damage due to an inappropriate foundation or when an incorrect bed frame is used
  • Sheet fit
  • Fabric Stains, soiling, fluid penetration, tears or burns
  • Adjustable foundations (see owner’s manual for details on warranty coverage)
  • Mattress fabric (except as noted in the Warranty Coverage Detail section for an All Foam mattress)
  • Zippered mattress cover damage due to improper care including removal of cover
  • Normal change in softness and recovery time associated with memory foam and latex materials over time. This does not affect the pressure relieving qualities of these materials.
  • Body impressions in the mattress that measure less than 1½" for an innerspring mattress; less than ¾" for all smooth top (non-quilted) hybrid mattresses and All Foam model mattresses.
  • Sagging in the mattress that measures less than 1½" for an innerspring mattress; less than ¾" for all smooth top (non-quilted) hybrid mattresses and All Foam model mattresses.


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. The duration of any applicable implied warranties, including but not limited to the implied warranties of merchantability and fitness, shall not exceed the term of this limited warranty. (Some states do not allow limitations on how long an implied warranty lasts, so this limitation may not apply to you.) Serta® shall not be liable for incidental or consequential damages that result from the use of your Serta® product. (Some states do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion may not apply to you.) No expressed or implied warranties are extended to persons who purchase the product from anyone other than Serta Simmons Bedding Company or its authorized dealers, and all warranties to such persons, including the implied warranties of merchantability and fitness, are hereby excluded.


If your Serta® 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 Serta® 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 Serta® dealer. If your original Serta® dealer is no longer in business or you have moved outside the service area, please contact Serta Customer Service at 1-888-55-SERTA (1-888-557-3782) between the hours of 9am to 5pm EST Monday - Friday. 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 Serta Simmons Bedding Company or its authorized dealers.

Need help deciding? Talk to us Now

Our Sleep Specialists are available in-store, online, or by phone or chat to help find your perfect mattress.

Chat with a Sleep Specialist Now