10 Year Warranty

The Corvina by International Bedding (IBC) is an extra firm (the firmest model we've ever carried!) double-sided (flippable) model. It has a durable and supportive LFK Coil innerspring unit with edge supports and a TENCEL fabric cover.

Its moisture-wicking and breathable cover provide you with a cooler night's sleep. The dense and extra firm foam layers on top of the spring provide you with the flattest, hardest sleeping surface available.

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  extra firm mattress with tencel fabric cover   heavy duty extra firm mattress double sided flippable lfk coil ibc corvina firm

Corvina - Firmest Double Sided Mattress

SALE reg.
Twin $636 $900
Twin XL $719 $1,025
Full $802 $1,150
Queen $912 $1,300
King $1,219 $1,750
Cal King $1,369 $1,875

Metal Frame(+$)

Waterproof Cover(+$)


fast delivery for low cost delivery cost and time

free shipping

Mattress Scale
extra firm mattress
Approx. Height of Set: 22" (Matt 13" Base 9")

This Mattress Features:


TENCEL Cover Layer
Fire Retardant Fiber
Two 3/4" Quilt Foam Layers

Mattress(Top Side)
2" Extra Firm Support Foam Layer

Foam Encased 800 Premium LFK InnerSpring w/Edge Supports

Mattress(Bottom Side)
2" Extra Firm Support Foam Layer

Cover(Bottom Side)
Two 3/4" Quilt Foam Layers
Fire Retardant Fiber
TENCEL Cover Layer


Optional Matching Standard Wood Foundation

10 Total Years (10 full)

Corvina - Firmest Double Sided Mattress

The Corvina Firm is the hardest/firmest mattress I have ever tried. The premium LFK InnerSpring unit is double hinged for improved durability. The TENCEL fabric of the cover is more natural and sleeps cooler than conventional mattress cover materials. This mattress is double-sided so you will get even more years of quality sleep from it than a single-sided version. The non-prorated warranty means that your mattress will be fully covered for ten years' time.

If it's firm you seek but with just the slightest amount of give, have a look at: IBC Miralux III - Firm LFK Mattress - TENCEL Cover. You'll get the same cover and the addition of a gel lumbar band - in a one-sided, firm (not extra firm) version.


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  • Shipping or delivery of this item to most areas within the 48 contiguous states only. We cannot offer delivery of this item to Alaska, Hawaii, US Territories or APO/FPO addresses without added charges. Please call customer service for rates and availability.
  • Nationwide and "free" rates are valid to most cities in the continental US. Destination must be accessible by large truck. Some locations may have a small surcharge.
  • For complete details, read our Shipping and Return policies.
  • Please call customer service for returns.

For local delivery rates and polices, check the Delivery Page



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