Skip to Main Content
Member Only Item

$1,299.99 After $400 OFF

Sleep Science Ara 13" King Memory Foam Mattress with Foundation 100% Visco Foam

Item #334940

Valid 7/6/15 through 8/2/15. While supplies last.

Online Price $1,699.99
Less -$400.00
Your Price $1,299.99
Price Per null:
  • Shipping & Handling included *
    *Haul Away of Your Old Mattress & Box Spring is Available for $85.00 at Checkout.

Member Only Item

View Cart

The estimated delivery time will be approximately
2 - 4 weeks from the time of order.

The Ara is Sleep Science’s™ pillow top, pure visco memory foam mattress. It is the closest thing to sleeping on a cloud.  Experience the ultimate in a luxuriously soft, supportive sleep environment.  The 13” Ara boasts 6-5/8 inches of premium memory foam that envelops you in an unparalleled feeling of weightless sleep that is supported by our patented Wedge Edge Support System and our proprietary ‘Air Channel’ Base.  It is covered in a super soft, bamboo blend sleep surface fabric that is cool to the touch, with elegant micro-suede side panels for a luxurious look and feel.  This is the mattress which visco memory foam purists come back to again and again.

  • 13” pillow top mattress fits the dimensions of your bed  
  • Meets the requirements of 16 CFR Part 1633 - Federal flammability (open flame) standards  
  • Limited Warranty: 20 years  
  • Cover is bamboo fabric consisting of three layers.   
  • This fabric is 300g/m2, the percentage of bamboo is 40%, nylon is 40%, polyester is 20%.  
  • Cover top layer: 100% bamboo fabric  
  • Middle layer: 100% nylon  
  • Bottom layer: 100% polyester.   
  • Micro-suede cover sides are 100% polyester  
  • Mattress core top layer: 3 inches 5-lb visco foam, 11-13 IFD  
  • Second layer: 3-5/8 inches 5-lb visco foam, 11-13 IFD  
  • Third layer: ½ inch air barrier  
  • Fourth Layer: The Wedge Patented Edge Support System  
  • Base layer: 6” Air Channel Base, dual density, dual IFD, relief cut urethane core  
  • King mattress dimensions: 76” W x 80” D x 13” H; Weight: 138 lbs.

Sleep Science Folding Bed Foundation:
The easy 1-2-3 assembly Sleep Science Folding Bed Foundation coordinates with the Sleep Science mattress to provide optimal support and comfort in a complete sleep system. The Sleep Science Foundation has a solid wood top and reinforced metal legs.  The long legs allow for added storage underneath the bed.  The foundation can be used to stand alone or it fits easily into an existing bed frame instead of a box spring.  The solid wood surface is optimal for supporting specialty mattresses.

The Sleep Science Folding Bed Foundation was designed for easy assembly.  Simply follow the instructions included in the box.  It only takes three easy steps and can be assembled in 5 minutes!  

  • 1. Unfold the frame
  • 2. Attach the legs
  • 3. Put the cover on

  • Fits inside most bed frames  
  • Meets the requirements of 16 CVR Part 1633 – Federal Flammability (open flame) Standards  
  • Easy to assemble, no tools required  
  • Designed specifically for Sleep Science specialty mattresses  
  • Solid top surface instead of wire that can damage a mattress after prolonged use  
  • Includes a matching foundation cover which is machine washable
  • Split King Foundation (2 Twin XL) Dimensions: 74” W x 79” D x 14“ H; Weight:  147 lbs

If you have questions regarding this product, assembly of furniture or product operation, please call 800-723-0316 and ask for the Customer Service Department related to Costco.

Model: CST-SET13-EK

  • Brand: Sleep Science
  • Collection Name: Ara
  • Model: CST-SET13-EK
  • Primary Mattress Composition: Memory Foam
  • Size of Bed Mattress: King

Standard shipping via White Glove* furniture carrier is included in the quoted price. Delivery includes in-home setup and removal of packing materials. Carrier will call or email to set up appointment with delivery window. Please include a daytime phone number in the shipping information at the time of checkout.

Extraordinary delivery requirements may necessitate an additional fee to the carrier.

The estimated delivery time will be approximately 2 - 4 weeks from the time of order.

Delivery is available to Alaska. An additional shipping and handling fee will be applied at check out and additional transit time will be required. Locations outside of a regular delivery area may be restricted. Click here to view restricted areas. To inquire about delivery to these areas, please contact customer service. Delivery is not available to Hawaii or Puerto Rico.

Delivery is not available to Hawaii.

Delivery is not available to Puerto Rico.

*Haul away of your old mattress and box spring set is available for an additional fee.  This fee will be quoted at checkout.

If you have any customer service questions, order status inquiries, concerns regarding defective product, assembly of furniture or product operation, please call 800-723-0316 and ask for the Customer Service Department related to Costco. products can be returned to any of our more than 600 Costco warehouses worldwide.

How to Return: For an immediate refund (including shipping and handling), simply return your purchase at any one of our Costco warehouses worldwide. If you are unable to return your order at one of our warehouses, please email customer service or call our customer service center at 1-800-955-2292 for assistance. To expedite the processing of your return, please reference your order number.

If you request an item be picked up for return, the item must be packaged and available for pick up in the same manner as it was delivered. If your order was delivered "curb side", it will need to be available for curb side pick up.
If the item arrived to you in a box, it will need to be in a box at the time of pick up.

View Costco's Return Policy.

For information or a written copy of the manufacturer's warranty, please contact us at:

Please wait, the reviews should load in just a moment.