Diamond Mattress Avani Hybrid Firm

The Avani Hybrid Firm by Diamond Mattress — now available at The Mattress Clinic in Oklahoma City — delivers premium, mattress-grade Talalay latex comfort paired with a high-performance coil support system. Crafted for those who prefer a firmer sleep surface without sacrificing comfort, it offers a refined, balanced sleeping experience that supports spinal alignment and durability. Customers looking for dependability and firm support will discover a mattress built to stand the test of time — while still offering the natural, buoyant feel of latex comfort. Optional guidance from APRN-CNP Quynh Boerner is available for shoppers who want additional insight into support and comfort matching, but it’s entirely your choice.

Key Features & Construction

• Available in 12", 14", and 15" profile heights — flexible enough to suit various bed frames and preferences

• Premium Talalay latex comfort layer — provides resilient support and a naturally buoyant feel

• Individually wrapped micro-coil comfort layer for adaptive surface response

• Zoned 7-Series pocketed coil support system with patented 700+ Center Zoned Support — delivers targeted lumbar and hip support

• Smooth-top surface for a clean, refined look and balanced feel

• Reinforced edge support for better perimeter stability and full-surface sleeping area

• Adjustable-base compatible — remains firm yet flexible enough for adjustable bed use

• Durable, high-quality build — crafted for long-term comfort and support

Latex Hypoallergenic & Safety Note
The Talalay latex used in this mattress is naturally hypoallergenic and resists dust mites, mold, and mildew — contributing to a cleaner, healthier sleep environment. Because the latex is mattress-grade and processed accordingly, it minimizes allergy risks for most people. That said, individuals with a known severe latex allergy should consult their healthcare provider before selecting latex-based models — to ensure safety and comfort.

Cooling & Temperature Control
Thanks to the breathable, open-cell structure of Talalay latex and the ventilated micro-coil system, this mattress maintains a naturally temperature-neutral sleep surface. It avoids the heat-trapping issues common with dense foams, so you get balanced comfort regardless of season — especially suitable if you prefer a firmer sleep surface but don’t want overheating.

Support System & Long-Term Durability
The combination of zoned pocketed coils plus buoyant latex means this mattress delivers consistent support night after night. The 700+ Center Zoned Support ensures lumbar stability, while the micro-coils and latex protect against sagging over time. For customers seeking long-term reliability rather than quick comfort, this is a standout hybrid — particularly for back sleepers or anyone who prefers a firmer, stable sleep base.

Motion Cancellation Performance — Elite
This hybrid earns an Elite motion cancellation rating thanks to individually wrapped coils, latex resilience, and responsive micro-coils. Partners shifting or getting out of bed are much less likely to disturb your side — an excellent fit for couples who want firm support and minimal motion transfer.

Pressure Relief for Sensitive Areas
While firm, the latex layer provides gentle contouring at key pressure points like shoulders and hips — helping reduce stiffness in the morning without sacrificing the overall firm support. Good choice for sleepers who want firmness but prefer a little cradle on joints.

Spinal Alignment & Back Support
The zoned coil core and latex comfort system combine to support a neutral spine position for back sleepers. The 700+ center support offers extra strength where the lower back needs it most. If you prefer a firm, stable base that still cushions enough to avoid pressure build-up, this mattress strikes a well-balanced approach.

Adjustable Base Compatibility
This model is fully compatible with adjustable bed frames; its hybrid construction flexes comfortably while maintaining support integrity. Great for sleepers who want adjustable base features while keeping a firm mattress feel.

Who This Mattress Is Best For

• Back sleepers who want a firm, supportive bed

• Sleepers seeking long-term durability and structure

• Couples needing Elite motion isolation and edge support

• Adjustable-base users who prefer a firmer mattress

• People who want a balanced combination of latex bounce + coil support

• Those who prefer temperature-neutral sleep without added cooling technology

Mattress Size Guide

Why Try This Mattress at The Mattress Clinic?
Visit our Oklahoma City showroom to experience the Avani Hybrid Firm firsthand — compare its firm yet responsive feel alongside medium and plush options. If you prefer expert input, optional consultation with APRN-CNP Quynh Boerner is available to help you match mattress support with your sleep posture and back health needs. You decide your comfort path; we help guide.

Visit Us In-Store
Come test the Avani Hybrid Firm at our showroom. Try it for 10 minutes, compare with other hybrid options, and discover whether firm latex hybrid comfort is the right fit for you.

365 Night Sleep Great or Exchange Guarantee

180 Night Low Price Promise

Return Policy 

365 Night Sleep Great or Exchange Guarantee

A new mattress is like a new pair of shoes—it takes time for the new materials and your body to adjust to each other. And with the wrong socks (bedding), you could end up hating the correct shoes for you. Typically, it takes about 35–40 days for a mattress to start performing at its best if you use the proper bedding. After this “break-in period,” if you feel a different mattress style might work better, you may exchange your mattress up to 365 days from the purchase date. Using our bedding products with our mattresses ensures that the bedding isn’t causing any issues and that it is, in fact, the mattress that’s the problem. This is why you need a protector & pillow from us to receive the Exchange Guarantee.

These policies constitute the “365 Night Sleep Great or Exchange Guarantee” 
A $199 or 10% Exchange Fee (whichever is greater) applies to all reselections. This fee covers delivery for swapping the mattresses up to 20 miles from the store. 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 given. The original mattress purchase must include a mattress protector and pillow purchased before the mattress is received. The mattress surrendered must be stain free and odor free. We are unable to exchange stained, unsanitary, odor damaged (smoke/pets etc.), or damaged (ripped, burns, etc) mattresses under the Exchange Guarantee. Products must have been used only for their intended purpose. This includes using the product on an appropriate base, frame, or foundation.

Please take your time in your reselection choice; only ONE comfort exchange is allowed per customer. keep all receipts and original tags on your mattress. The Exchange Guarantee will be voided if you remove the original tag from the mattress or lose your proof of purchase. 
 
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. Your mattress reselection will be sold at “normal” sale price. Any discounts/gifts given with your original purchase of mattress, sheet set(s), mattress protector(s), pillow, and/or non-purchased gift cards will be added to the exchange fee. This means if you receive a discount/gift with your mattress and/or qualifying items and want to exchange it for the same mattress but a different feel, you are to pay the difference of the discount(s)/gift given, the exchange fee, plus any price increases made since your purchase (if increased). Your re-selection must be the same size as your original mattress purchase, Example: Queen for Queen. 

180 Night Low Price Promise
Subject to the following terms, we will match any advertised price of the same product. 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. 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 wish to cancel before receiving the merchandise, there will be a 15% restocking fee.

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 purchases made prior to October 14th, 2025, at 10:00 AM CST will be governed by the rules and regulations that were in play at the time you purchased. See store for details regarding purchases made before 10/14/2025.

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.

365 Night Sleep Great or Exchange Guarantee

180 Night Low Price Promise

Return Policy 

365 Night Sleep Great or Exchange Guarantee

A new mattress is like a new pair of shoes—it takes time for the new materials and your body to adjust to each other. And with the wrong socks (bedding), you could end up hating the correct shoes for you. Typically, it takes about 35–40 days for a mattress to start performing at its best if you use the proper bedding. After this “break-in period,” if you feel a different mattress style might work better, you may exchange your mattress up to 365 days from the purchase date. Using our bedding products with our mattresses ensures that the bedding isn’t causing any issues and that it is, in fact, the mattress that’s the problem. This is why you need a protector & pillow from us to receive the Exchange Guarantee.

These policies constitute the “365 Night Sleep Great or Exchange Guarantee” 
A $199 or 10% Exchange Fee (whichever is greater) applies to all reselections. This fee covers delivery for swapping the mattresses up to 20 miles from the store. 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 given. The original mattress purchase must include a mattress protector and pillow purchased before the mattress is received. The mattress surrendered must be stain free and odor free. We are unable to exchange stained, unsanitary, odor damaged (smoke/pets etc.), or damaged (ripped, burns, etc) mattresses under the Exchange Guarantee. Products must have been used only for their intended purpose. This includes using the product on an appropriate base, frame, or foundation.

Please take your time in your reselection choice; only ONE comfort exchange is allowed per customer. keep all receipts and original tags on your mattress. The Exchange Guarantee will be voided if you remove the original tag from the mattress or lose your proof of purchase. 
 
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. Your mattress reselection will be sold at “normal” sale price. Any discounts/gifts given with your original purchase of mattress, sheet set(s), mattress protector(s), pillow, and/or non-purchased gift cards will be added to the exchange fee. This means if you receive a discount/gift with your mattress and/or qualifying items and want to exchange it for the same mattress but a different feel, you are to pay the difference of the discount(s)/gift given, the exchange fee, plus any price increases made since your purchase (if increased). Your re-selection must be the same size as your original mattress purchase, Example: Queen for Queen. 

180 Night Low Price Promise
Subject to the following terms, we will match any advertised price of the same product. 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. 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 wish to cancel before receiving the merchandise, there will be a 15% restocking fee.

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 purchases made prior to October 14th, 2025, at 10:00 AM CST will be governed by the rules and regulations that were in play at the time you purchased. See store for details regarding purchases made before 10/14/2025.

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.