Mattress Type: Hybrid
Comfort Level: Plush
COOLING COVER. CoolTemp™ this cool-to-the-touch, breathable cover is made with recycled plastic bottles powered by REPREVE®.
PLANT-BASED FOAM. Terra Fusion Memory Foam made from 30% plant-based material that provides pressure relief and reduced motion transfer for uninterrupted sleep.
BREATHABLE LATEX FOAM. A responsive layer containing 20% natural latex that’s breathable and supportive.
PERSONALIZED COMFORT. Customfit™ HD premium, high-density memory foam conforms to your body for comfortable support all night long.
TARGETED PRESSURE RELIEF. 1000 Series 5-Zone Quad Coil Support System made with 85% RECYCLED STEEL, provides targeted pressure relief and support for your back and thighs—and cradles you everywhere else.
RECYCLED FIBER BASE. Compressed recycled fiber provides a supportive base under the mattress core.
Adjustable base compatible.
Low-VOC foam is certified to CertiPUR-US® standards, which ensures it is made without PBDEs, TDCPP or TCEP ("Tris") flame retardants, ozone depleters, heavy metals, formaldehyde, and phthalates regulated by the Consumer Product Safety Commission.
The Finished Size of the mattress is printed on the law tag. The tolerance is ± ½ inch from the printed Finished Size.
Designed and Assembled in the USA of domestic and imported materials.

When used with a proper supportive bed frame, your new mattress or foundation is protected by a limited manufacturer’s warranty. For specific warranty information: Serta® Mattress Warranty.
Always use a mattress protector/pad to shield your mattress and preserve your warranty rights.
No flip design- to prolong the lifespan of your mattress, rotate 180 degrees every 3-6 months or as needed for even wear.

White Glove Service: Items are delivered to your room of choice by appointment, then unpacked and fully assembled by a skilled two-person team. Includes packaging removal and recycling. Fee varies by location and order total.

Williams Sonoma is compliant with California’s Retailer Take Back Program Legislation.
If you are having your mattress delivered, we will take back your old mattress and/or foundation at no additional cost.
All delivery or set-up fees for the products being delivered still apply.
For white glove delivery, the old mattress and/or foundation will be taken at delivery of your new mattress.
For parcel shipments, we are happy to pick up your old mattress and/or foundation. Please call us to schedule a pickup within 30 days of the delivery of your new mattress.
Please note we may refuse to pick up the old mattress and/or foundation if it poses a health or safety risk.
For questions or to schedule a pickup contact: Pottery Barn: 1.888.779.5176

Serta® iComfortECO S40 Hybrid Mattress