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The supportiveness of the mattress surface, ranging from extra firm for maximum support to ultra plush for a softer, cushioned feel.

Mattress Comfort Level

The internal components and support system of the mattress, like innerspring, memory foam, or hybrid.

Mattress Construction

The style of the mattress's uppermost comfort layer, such as a pillow top, euro top, or tight top.

Mattress Top

A mattress designed to be flipped over regularly to promote even wear and tear to extend its lifespan.

Double Sided Mattress

The overall measurement of the item from the floor to its highest point (how tall the item is).

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Concept ZZZ by Serta CZZZ 6IX Foam Tight Top Firm King Mattress

Concept ZZZ by Serta is a collection designed for those who need a comfortable night’s sleep, for an even more comfortable price.

Concept ZZZ by Serta CZZZ 6IX Foam Tight Top Firm Twin Mattress

Concept ZZZ by Serta CZZZ 6IX Foam Tight Top Firm Twin XL Mattress

Concept ZZZ by Serta CZZZ 6IX Foam Tight Top Firm Full Mattress

Concept ZZZ by Serta CZZZ 6IX Foam Tight Top Firm Queen Mattress

The CZZZ 6IX model comes in a firm comfort which is great for back and front sleepers while also featuring Serta Anti-Microbial Technology to protect against bacteria build up and a high density foam core providing the support you need.

Our non-toxic Serta Anti-Microbial Fibre positioned near the top of your mattress keeps it fresh and clean.

Provides durable support for any sleep position. With consistent support from edge to edge, you’ll be comfortably supported all night long.

*Mattress only, all other products sold separately. Images may not depict actual size.

Low Motion Transfer

Compatible with Adjustable Bases

Odor Resistant

Dust Mite Resistant

Edge Support

CertiPUR - US Certified

Cover Material

Crate Designs™ Furniture Jasmine Foam Medium Twin Mattress

Jasmine foam mattresses are medium-firm and designed to eliminate motion transfer. The cover is made with a knitted stretch fabric-blend of cotton, spandex and polyester.  

Crate Designs™ Furniture Jasmine Foam Medium Full XL Mattress

Crate Designs™ Furniture Jasmine Foam Medium Twin XL Mattress

Crate Designs™ Furniture Jasmine Foam Medium Full Mattress

Crate Designs™ Furniture Jasmine Foam Medium Queen Mattress

Made in Canada and available in sizes twin through queen including hard to find twin XL and full XL which provide more length!

Crate™ is characterized by its clean, simple lines and durable oil finish. The furniture has a hand- crafted look and feel, with sizes designed to make it easy for you to mix and match.

Our quality construction begins with carefully selected southern Yellow Pine, ideal for long lasting furniture. Veneered panels are used on doors and most tops, for easier cleaning and greater stability.

You’re searching for solutions. Find your answers from over 300 styles, sizes and standard variations of furniture.

The standard Classic oil finish* is simple and easy to care for - the inevitable scrape or scratch is almost invisible. Premium finishes add a touch of sheen, smoothness and a moderate amount of moisture resistance. You can also choose a lacquer finish on most tops or order your furniture pieces unfinished to personalize them yourself!

Crate Designs carries on a tradition of producing quality Canadian furniture at our factory in Chesley, Ontario - since 1906! The company was formed as The Chesley Chair Company, producing chairs for other furniture manufacturers. As the product line was broadened beyond just chairs the name was changed to Heirloom of Canada.

After discontinuing the Heirloom line of traditional styles in the 1990's, to concentrate on Crate furniture, the name was changed to Crate Designs™.

*Mattress only, all other products sold separately. Images may not reflect actual size.

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 14" Ultra Plush Tight Top California King Mattress in a Box

Discover the luxury of this hybrid California king mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its high-density gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive NanoCoil unit and individually wrapped coils help to provide a great night's sleep. 

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 14" Ultra Plush Tight Top King Mattress in a Box

Discover the luxury of this hybrid king mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its high-density gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive NanoCoil unit and individually wrapped coils help to provide a great night's sleep.

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 14" Ultra Plush Tight Top Queen Mattress in a Box

Discover the luxury of this hybrid queen mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its high-density gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive NanoCoil unit and individually wrapped coils help to provide a great night's sleep.

Sierra Sleep® by Ashley Millennium 2.0 Foam 12" Firm Pillow Top Queen Mattress in a Box

Discover the luxury of this memory foam queen mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Gel memory foam and high-density support foam conform to your body, delivering pressure relief and comfort. And a green tea-infused support foam base provides enhanced stability.

Sierra Sleep® by Ashley Millennium 2.0 Foam 12" Firm Pillow Top California King Mattress in a Box

Discover the luxury of this memory foam California king mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Gel memory foam and high-density support foam conform to your body, delivering pressure relief and comfort. And a green tea-infused support foam base provides enhanced stability.

Sierra Sleep® by Ashley Millennium 2.0 Foam 14" Plush Pillow Top Queen Mattress in a Box

Sierra Sleep® by Ashley Millennium 2.0 Foam 14" Plush Pillow Top King Mattress in a Box

Discover the luxury of this memory foam king mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Gel memory foam and high-density support foam conform to your body, delivering pressure relief and comfort. And a green tea-infused support foam base provides enhanced stability.

Sierra Sleep® by Ashley Millennium 2.0 Foam 14" Plush Pillow Top Twin XL Mattress in a Box

Discover the luxury of this memory foam twin XL mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Gel memory foam and high-density support foam conform to your body, delivering pressure relief and comfort. And a green tea-infused support foam base provides enhanced stability.

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 12" Plush Euro Top King Mattress in a Box

Discover the luxury of this hybrid king mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive nanocoil unit and individually wrapped coils help to provide a great night's sleep.

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 12" Plush Euro Top Twin XL Mattress in a Box

Discover the luxury of this hybrid twin XL mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive nanocoil unit and individually wrapped coils help to provide a great night's sleep.

Sierra Sleep® by Ashley Millennium 2.0 Foam 12" Firm Pillow Top King Mattress in a Box

Sierra Sleep® by Ashley Millennium 2.0 Foam 12" Firm Pillow Top Twin XL Mattress in a Box

Sierra Sleep® by Ashley Millennium 2.0 Foam 14" Plush Pillow Top California King Mattress in a Box

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 12" Plush Euro Top Queen Mattress in a Box

Discover the luxury of this hybrid queen mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive nanocoil unit and individually wrapped coils help to provide a great night's sleep.

Sierra Sleep® by Ashley Millennium 2.0 Hybrid 12" Plush Euro Top California King Mattress in a Box

Discover the luxury of this hybrid California king mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive nanocoil unit and individually wrapped coils help to provide a great night's sleep.

Discover the luxury of this memory foam queen mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Gel memory foam and high-density support foam conform to your body, delivering pressur

Dual cooling action with phase changing material (PCM)

High-density gel memory foam for lumbar support

High-density body contouring support foam

Green tea-infused base foam for added stability

Hyper cool luxury 4-way stretch knit cover for uniform comfort and durability

Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening

Note: Purchasing mattress and foundation from two different brands may void warranty; see warranty for details

High-density body-contouring support foam

Luxury 4-way stretch knit cover for uniform comfort and durability

Foam

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