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Grand Slumber Mattress





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Highlighting the foam support base on our oversized Grand Slumber Mattress.

Foam Support Base

5.5” of high-density foam for a robust and resilient foundation that supports all body types and sleeping positions.

Highlighting the pink foam layer of our oversized Grand Slumber Mattress.

Pink Foam

A unique combination of soft, comfortable cushion with high-density durability for long-lasting support. Get the hug and bounce you need with this exclusive foam layer. When flipped up, this conforming latex-like foam acts as the “softer” side of the mattress base.

Highlighting the latex layer in the topper of our oversized Grand Slumber Mattress.


Naturally derived latex in the topper bolsters pressure relieving benefits by increasing durability and responsiveness. It reduces sinking into the mattress and guarantees smooth transitions while you sleep.

Highlighting the memory foam layer in the topper of our oversized Grand Slumber Mattress.

Cooling Memory Foam

The memory foam in the topper offers a blissful initial feel. It provides pressure relief for hips and shoulders without leaving impressions. Also eliminates motion transfer. Cooling properties keep you from sleeping hot.

Highlighting the quilted cover on the topper of our oversized Grand Slumber Mattress.

Quilted Cover

One-inch of comfort foam quilted with plush, premium fabric to complete the mattress topper.

Black Alaskan King size metal Platform Bed with a tan Dune headboard seen in a nice room from directly at the foot of the bed.

Where Grand Size Meets Supreme Comfort

Get ready to fall in love with the flawless craftsmanship of our Grand Slumber Mattress. Enjoy cool, serene nights with its exceptional breathability and innovative pressure relieving design. It perfectly contours to every sleeper without leaving lasting impressions.

Durable and resilient at its core, this oversized mattress is made to go with our sturdy bed frames. Choose the Grand Slumber Mattress to make every night a luxury sleep experience.

A young couple asleep on their Platform Bed. Seen from the left-hand side of the bed at a slight close up.

Customize Your Comfort with a Simple Flip

Whether you crave a firm foundation or a soft embrace, the Grand Slumber Mattress has you covered. Our oversized mattress features a revolutionary two-sided system. This innovative design makes it easy to tailor your experience. One side of the base is softer and the other firmer. Simply flip the support base to the opposite side and attach the topper to switch between firmness levels. It’s the ultimate solution for diverse comfort needs. All available in one big, luxurious mattress.

A black Wyoming King size metal four poster Canopy Bed in a minimalist, sparsely designed upscale master bedroom decorated mostly in white and light colors. Seen directly from the right-hand side of the bed at a slight distance.

Enjoy a Mattress That Lasts a Lifetime

Shop with confidence when you buy our oversized Grand Slumber Mattress. The durable, long-lasting foam base is made to support you and your life for years to come. And when the topper section wears out, you can simply buy a replacement. This ensures continued comfort without needing to replace the entire mattress. Contact us for more information.

  • American Made

    Our mattresses are 100% made in the USA using American materials. We offer discounts for US veterans with proof of military service.

  • Safe & Sustainable

    All our mattresses are CertiPUR-US certified. They are made from natural fire retardant materials. The cover is a blend of organic cotton, cashmere, and polyester. We do not use any Ammonium Phosphates or fiberglass.

Free Shipping

We offer FREE SHIPPING on all orders in the contiguous United States. Shipping to Alaska, Hawaii, Puerto Rico, and Canada is also available for an additional fee. Due to recent increases in freight costs, orders to Oregon and Washington State are also subject to additional shipping fees.

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Additional Information

  • The dimensions of our different Grand Slumber Mattress sizes are:

    • Wyoming King: 84” x 84”
    • Texas King: 80” x 98”
    • Alberta King: 96” x 96”
    • Florida King: 108” x 80”
    • Alaskan King: 108” x 108”
  • Grand Slumber Mattresses ship independently from our bed frames. Mattresses will be scheduled for delivery within 3-5 business days of your bed. If your mattress is ordered without a bed frame, it ships out immediately.

    The Grand Slumber Mattresses are delivered in three (3) separate boxes.

    Mattresses are not delivered by our White Glove Delivery partners. If you order White Glove Delivery for your bed frame, your Grand Slumber Mattress will still arrive on its own.

  • Our Grand Slumber Mattress offers the ability to adjust for a softer or firmer sleep experience. Simply flip the base section of the mattress. Then reattach the topper to the side that you will be sleeping on. When flipped up, the Pink Foam side of the mattress provides a softer cushion. When reversed with the Foam Support Base of the mattress facing up, you’ll get a firmer feel.

  • Our oversized bed frames are designed so that you will not need to use a box spring to support your mattress. The mattress rests on durable 2x4 and 2x8 wooden slats. We recommend placing a solid surface between a memory foam mattress and the wooden slats. All Grand Slumber Mattresses ordered with a bed frame automatically ship with a ⅛” masonite board. This keeps the foam-based mattress from sinking between the slats over time.

  • We understand that great sleep is an important investment for anyone. To ensure that your Grand Slumber Mattress lasts a lifetime, we offer the ability to buy and replace just the topper. This allows you to continue using the same mattress base while still refreshing your sleep experience over the years. Contact us for more information.

Charcoal colored Alberta King size Platform Bed with a Graphite Headboard in a nice neutral open room. Seen from the lower right-hand corner.

We Offer Financing

Buy Now. Pay Later.

Our financing options let you order your new bed today and pay it off over 12, 24, or 36 months. We offer competitive interest rates, including as low as 0% APR for 12 months.* Find out if you qualify with our fast and easy online application.

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*Subject to approval of credit application. Rates range from 0% to 29.99% APR, resulting in, for example, 36 monthly payments of $32.26 at 9.99% APR, per $1,000 borrowed. APRs will vary depending on credit qualifications, loan amount, and term. Bread® pay-over-time plans are loans made by Comenity Capital Bank.

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