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Diamond Mattress® Rock Express 12" Tight Top Extra Firm Mattress

$749.99 USD

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Diamond Mattress Rock Express 12″ Tight Top Extra Firm Hybrid The Rock Express Mattress offers a performance moisture wicking fabric, with a firm comfort feel, diamond-made dynamic edge wrapped coils. Performance Moisture Wicking Fabric CertiPUR Extra-Firm HD Comfort Layers High Density Foam Lay...

We realize that the brief time you spend on a mattress in our showroom is different from a full night's sleep. Sometimes what we thought was the right mattress in the store ends up not being the best one for you at home. That is why we offer a 365 Night Sleep Great or Exchange Guarantee for our customers who bought a mattress protector. A new mattress is like a new pair of shoes - it takes time for the new materials to adjust to your sleeping behavior. Usually, it takes about 30-days for a mattress to start performing at its best. If after this 30-day initial adjustment period you feel a different mattress style might work better, you can exchange your mattress up to 365 days from purchase.

These policies constitute The Mattress Clinic Guarantee:

The Mattress Clinic will allow a one-time re-selection ONLY after the 30-day adjustment or “break-in” period within 365 days of the delivery date of your original mattress.

You may select a mattress of equal or greater value. If you select a sleep surface of greater value, you will be responsible for the difference in price. If a reselection is of lesser value, no refund will be made. The original mattress purchase must also include, AND BE USED, a mattress protector bought from us. The mattress surrendered must be stain free. We are unable to exchange, or refund stained, unsanitary or damaged mattresses under the Sleep Great Guarantee.

Please take your time in your reselection choice; only ONE comfort exchange is allowed per customer. Please keep all receipts and original tags on your mattress. The Sleep Great Guarantee will be voided if you remove the original tag from the mattress.

Reselections are not allowed for issues regarding mattress size or height. Bedding accessories such as pillows, protectors, sheets, adjustable bases, bedding foundation or furniture, are not eligible for returns or exchanges. Reselections are not valid on “special sizes” (California King, split Queen, Etc.), custom orders, clearance merchandise, floor models or warranty exchanges.

All reselections are subject to a 10% or $100 (which is greater) restocking fee.


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Size: Twin XL

  • Twin XL
  • Full
  • Queen
  • King
  • California King
$749.99 USD
Out of stock
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Whether you need to replace your mattress alone or need a completely new setup with refreshed accessories, our sleep experts can guide you through the entire process and help you build the bed of your dreams.

We're available 7 days a week, including holidays.
Our inventory changes rapidly in store and online. Please call for availability of all products shown on the website.
California King mattresses are special order only, 2-3 weeks expected arrival.

Mattress Comfort Scale

  • 1
  • 2
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  • 8
SOFT
MEDIUM
FIRM
What is a soft mattress?
The perfect solution for Side Sleepers
Improves spinal alignment
More gentle support for your body's natural shape
What is a medium mattress?
The right level of firmness for any sleep position
A balance between contouring and support
The feeling of sleeping on your bed's top layers
What is a firm mattress?
The best solution for Back and Stomach sleepers
A smoother, flatter surface for additional lumbar support
No feeling of sinking deeply into your mattress

Diamond Mattress Rock Express 12″ Tight Top Extra Firm Hybrid

The Rock Express Mattress offers a performance moisture wicking fabric, with a firm comfort feel, diamond-made dynamic edge wrapped coils.

  • Performance Moisture Wicking Fabric
  • CertiPUR Extra-Firm HD Comfort Layers
  • High Density Foam Layers for Firm Support
  • Diamond-made Dynamic Edge Wrapped Coils
  • Firmness: 9
  • Height: 12 in.

    Firmness Scale: Medium

    Plush: 2-3          Medium: 5-6          Firm: 8-9

    Why Hybrids Are Great

    No Motion Transfer

    Individual coil unit prevents motion transfer between partners and provides personalized support

    Cooler Sleep

    Hybrid coils allow more airflow under the top layers of material to keep the mattress Fresh & Cool

    Pain and Pressure Relief

    Individual coils provide personalized support and contouring to eliminate painful pressure points, reducing tossing and turning at night. A hybrid design for a boost of balanced comfort, which contours to your natural shape to help achieve a comfortable sleeping posture

    Eco-Friendly

    Our coils are made by Diamond in the USA using recycled steel and our foams are CertiPUR-us certified to have no harmful VOC's

    365 Night Sleep Great or Exchange Guarantee 
    180 Night Low Price Promise
    Return Policy 
    

    365 Night Sleep Great or Exchange Guarantee

    We realize that the brief time you spend on a mattress in our showroom is different from a full night's sleep. Sometimes what we thought was the right mattress in the store ends up not being the best one for you at home. That is why we offer a 365 Night Sleep Great or Exchange Guarantee for our customers who bought a mattress protector. A new mattress is like a new pair of shoes - it takes time for the new materials to adjust to your sleeping behavior. Usually, it takes about 35-days for a mattress to start performing at its best. If after this 35-day initial adjustment period (Tempur-Latex 40-days) you feel a different mattress style might work better, you can exchange your mattress up to 365 days from purchase. 

    These policies constitute The Mattress Clinic Guarantee 
    The Mattress Clinic will allow a one-time re-selection ONLY after the 35-day adjustment or “break-in” period (Tempur-Latex 40-days). You have 365 days from the purchased date to exchange your mattress.  
    You may select a mattress of equal or greater value of the same size. If you select a sleep surface of greater value, you will be responsible for the difference in price. If a reselection is of lesser value, no refund will be made. The original mattress purchase must also include, AND BE USED, a mattress protector bought from us. The mattress surrendered must be stain free. We are unable to exchange stained, unsanitary or damaged mattresses under the Sleep Great Guarantee. Products must have been used only for their intended purpose. This includes using the product on an appropriate base, frame, or foundation. Environmental damage, such as mold, due to the misuse of the product in this way voids comfort exchange/warranty eligibility.

    Please take your time in your reselection choice; only ONE comfort exchange is allowed per customer. Please keep all receipts and original tags on your mattress. The Sleep Great Guarantee will be voided if you remove the original tag from the mattress. 
     
    Reselections are not allowed for issues regarding mattress size or height. Bedding accessories such as pillows, protectors, sheets, adjustable bases, bedding foundation or furniture, are not eligible for exchanges. Reselections are not valid on “special sizes” (California King, split Queen, Etc.), custom orders, clearance merchandise, floor models or warranty exchanges. 
    *All reselections are subject to a $199 Exchange fee or 10%, whichever is greater. Your reselection choice will be sold at normal price (excluding sales events). This means if you received a discount on your purchase and want to exchange it for the same mattress but a different feel you are to pay the difference of the discount given, the exchange fee, plus any price increases made since your purchase (if increased). Your reselection must be the same size as your original mattress purchase. 

     

    180 Night Low Price Promise
    We guarantee the best brands at the best prices. Subject to the following terms, we will match any advertised price. If you find the same mattress advertised for less than your invoiced price within 180 days of purchase, bring the advertisement to a Mattress Clinic store, and we will credit your account or give you a refund check for the price difference. Our 180 Night Low Price Promise does not apply to clearance items, floor models, vendor rollbacks/rebates, special purchases, promotional items, doorbusters, discontinued merchandise, or Holiday Sales/events. Merchandise offered for sale on auction sites (i.e., eBay, Craigslist, Facebook, etc.) or by Closeout/Overstock/Bulk dealers (e.g., Costco, Sams Club, Overstock.com, The Dump, Wayfair.com, Amazon.com) is excluded from the 180 Night Low Price Guarantee.

     

    Return Policy

    All sales are final. There are no "return of payment(s)" on items purchased after delivered or picked up. If you have placed any order and wish to cancel before receiving the merchandise, there will be a 15% restocking fee. We try our hardest to work with the community as much as we can. If the product hasn't been ordered yet we will work with you on the restocking fee, but once the Manufacture receives the order, they do not allow us to cancel. 

    Additional Information:
    MATTRESS CLINIC IS NOT RESPONSIBLE FOR LOADING, TIE DOWN, OR SECURING PRODUCT IN PERSONAL VEHICLES. WHEN LOADING VEHICLE IF DAMAGE(S) OCCUR TO PRODUCT OR VEHICLE, THE CUSTOMER IS HELD RESPONSIBLE. All mattresses purchased prior to December 12th, 2022, at 10:00 AM CST are not eligible for comfort exchanges. All purchases made prior to December 12th, 2022, at 10:00 AM CST will be governed by the rules and regulations that were in play at the time you purchased.

    Please contact Customer Care with any questions. Any situations/sales/or deals made that are not explained or mentioned above will be handled by the owner as he sees fit.

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