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Magniflex MagniStretch 12 Mattress - Active Spinal Traction

Original price $3,959.00
Original price $3,959.00 - Original price $7,918.00
Original price $3,959.00
Current price $3,599.00
$3,599.00 - $7,198.00
Current price $3,599.00
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Free Curbside Shipping: 2 Weeks
White Glove Delivery: 3 Weeks
White Glove Delivery + Removal: 3 Weeks

Complete Your Bed

This mattress pairs with either Magniflex knock-down foundation below. Add one using the "Add a Matching Magniflex Foundation" dropdown above, or view full details here.

The Magniflex MagniStretch 12 Mattress uses a patented, inclined-foam traction system that stretches gently from the lumbar area toward the neck and feet, helping decompress the spine while you sleep. Developed with the University of Zaragoza's Department of Mechanical Engineering and certified by the American Chiropractic Association (ACA) in 2017, it pairs a medium-firm feel with a thermo-regulating Outlast® cover in a 12" profile, designed in Italy and made in the USA.

Magniflex MagniStretch 12 Mattress

Traction-Based Spinal Decompression

The MagniStretch 12 is built around Magniflex's patented inclined support-zone system: two sets of angled foam zones move in opposite directions in response to body weight, creating gentle traction on the spine and increasing the space between vertebrae. It's the technology at the heart of the entire MagniStretch line, developed through ergonomic research and certified by the ACA for its beneficial effect in lengthening and relaxing the spine.

Above the traction core sits a thermo-regulating Outlast® cover, a Memoform comfort layer, and Super Soft Fiber padding, for a medium-firm feel that stays supportive without losing pressure relief.

Built For

Italian Craftsmanship

Handmade in Prato, Italy Since 1962

Magniflex was founded in Prato, Tuscany in 1962, where the brand's design and engineering team is still based today. Every mattress in this collection is designed in Italy and manufactured at Magniflex USA's factory in Miami, Florida. Each mattress is vacuum-sealed and compressed for shipping using a patented process that shrinks shipping volume by roughly 90% and fully decompresses within 24 hours of unboxing.

Spinal Health

ACA-Certified Spinal Decompression

The MagniStretch line is certified by the American Chiropractic Association for its beneficial effect in lengthening and relaxing the spine, backed by ergonomic testing developed with the University of Zaragoza's Department of Mechanical Engineering.

Sleep Position

Back & Stomach Sleepers

A medium-firm feel with a supportive traction core suits back and stomach sleepers who want targeted spinal support without sacrificing comfort.

Why You'll Love the MagniStretch 12

  • Patented traction system — inclined support zones gently decompress the spine as you sleep
  • ACA-certified — certified by the American Chiropractic Association
  • Medium-firm feel — supportive comfort for back & stomach sleepers
  • Thermo-regulating Outlast® cover — removable and washable
  • Consistent 12" profile — fits standard frames, platform beds, and adjustable bases
  • Multi-zone construction — targeted support where the body needs it most
  • Designed in Italy, Made in USA
  • 10-Year Limited Warranty

Sizes & Specifications

Available Sizes
  • Twin
  • Twin XL
  • Full
  • Queen
  • King
  • Cal King
  • Split King (2 Mattresses)
Specifications
  • Construction: Foam (Outlast® cover, Memoform, Super Soft Fiber, Eliosoft traction layers, Elioform base)
  • Mattress Height: 12 inches
  • Feel: Medium Firm
  • Made in: USA (Designed in Italy)
  • Warranty: 10-year limited warranty

Engineered for Medium-Firm, All-Night Support

Magniflex MagniStretch 12 layer diagram and materials
Construction

What's Inside

  1. 1 Outlast® Cover with Natural Viscose — a thermo-regulating fabric that absorbs and releases heat to keep temperature constant through the night; fully removable and washable, with a 3D band for added breathability.
  2. 2 1/2" Memoform Padding — an anatomical foam that adapts to the body's silhouette for a light, relaxed feel.
  3. 3 1/2" Super Soft Fiber — a soft, breathable padding layer that adds a gentle, enveloping feel.
  4. 4 Eliosoft Traction Layers (2" + 4½") — Magnifoam's softer variant, shaped into inclined support zones that gently decompress the spine.
  5. 5 Elioform Base Layer (4½") — Magnifoam's firmer variant, providing the foundational support the traction system works against.
Magniflex MagniStretch spine decompression illustration
Patented Technology

How the MagniStretch Traction System Works

Two sets of inclined support zones inside the MagniStretch 12 move in opposite directions in response to body weight, creating subtle traction on the spine and increasing the space between vertebrae. The system was developed through a patent held in collaboration with the University of Zaragoza's Department of Mechanical Engineering, following an extensive program of ergonomic testing.

Why it matters:

  • ACA-certified — certified by the American Chiropractic Association in 2017 for its beneficial effect in lengthening and relaxing the spine
  • Reduced spinal compression — gentle traction targets the lumbar area through the neck and feet
  • Research-backed — developed through academic ergonomic testing, not just marketing claims
Feel & Support

Built for a Medium-Firm Feel

The MagniStretch 12 balances the traction system's supportive structure with just enough cushioning on top, landing on a medium-firm feel that suits back and stomach sleepers.

Why it matters:

  • Balanced support — firm enough to keep the spine aligned, soft enough for comfort
  • Multi-zone design — support calibrated to different areas of the body
Profile Height

A Consistent 12" Profile

The MagniStretch 12 holds a 12" profile across every size in the collection.

Why it matters:

  • Consistent height — the same profile no matter which size you choose
  • Frame-friendly — fits standard bed frames, platform beds, and adjustable bases
Made to Last

Designed in Italy, Made in the USA — Backed for the Long Haul

10-Year Limited Warranty: The MagniStretch 12 is designed in Italy and made in the USA, backed by Magniflex's 10-Year Limited Warranty against defects in workmanship and materials.

MATTRESS DIMENSIONS

  • Twin

    38" wide x 74" long
    12" High

  • Twin XL

    38" wide x 80" long
    12" High

  • Full

    54" wide x 75" long
    12" High

  • Queen

    60" wide x 80" long
    12" High

  • King

    76" wide x 80" long
    12" High

  • Cal King

    72" wide x 84" long
    12" High

  • Split King (2 Mattresses)

    38" wide x 80" long (each piece)
    12" High

*Dimensions of each individual mattress may vary.

SPECIFICATIONS

  • Construction: Foam — Outlast® cover with Natural Viscose, 1/2" Memoform padding, 1/2" Super Soft Fiber, Eliosoft traction layers (2" + 4½"), 4½" Elioform base
  • Mattress Height: 12 inches
  • Feel: Medium Firm
  • Support: Medium
  • Made in: USA (Designed in Italy)
  • Certifications: ACA (American Chiropractic Association) certified spinal decompression technology; OEKO-TEX® Class I certified fabrics; CertiPUR-US® certified foams; ergonomic testing developed with the University of Florence
  • Warranty: 10-year limited warranty
  • Care: Spot clean only — use a clean white cloth with a mild oxi-based cleaning solution, blot (don't rub), and air dry completely before use. Use a mattress protector; do not apply liquids directly to the mattress. Rotate periodically for even wear.

10-YEAR LIMITED WARRANTY

Magniflex is pleased to provide you with a 10-year limited warranty to protect against any potential workmanship or material defects in our mattresses. The limited warranty for mattresses remains in force for ten (10) years and is valid from the date of purchase. The original purchase receipt is required as proof of purchase. This limited warranty is to the benefit of the original purchaser of the product. It is not transferable. This warranty, with the exception of fabric or handles, covers any visible indentation exceeding one and one-quarter inches (1 1⁄4”) on one side of the mattress. In cases where identical materials are unavailable for repair or replacement, we will substitute materials of equal quality. To ensure the effectiveness of this warranty, please use the mattress in conjunction with a firm, non-spring foundation, such as a slatted/grid top bed base, Magniflex foundation, or similar hard surfaces. These options guarantee proper center support and ventilation. Your satisfaction and comfort are our top priorities. Do not use a box spring foundation or foundations with inadequate center support, as they are likely to cause defects in the mattress, which are not covered under this warranty.

Exclusions from Mattress Coverage:

Our mattress limited warranty shall NOT apply in the following circumstances:

  • Wear and tear of the product due to normal use.
  • If the product is found to be unsanitary, dampened, burned, cut, stained, and/or soiled.
  • If the product is used without a proper foundation and/or inadequate center support.
  • Defects or damages resulting from accidents, misuse, abuse, neglect, unusual physical stress, alteration, improper operation, maintenance, or handling of the product.
  • If the product has any damage to the outer fabric of the cover, including wear and tear.
  • If the product is used for commercial purposes (including, but not limited to, hotels, motels, or institutional facilities) unless designed and built for commercial use.
  • If the product is not used but rather stored (whether long or short-term) in any orientation.
  • If the product was exposed to hot or cold temperatures, wet environments, and inappropriate climate conditions, including but not limited to, rain and humidity.
  • Discoloration or other cosmetic changes.
  • If the product was repaired by third parties not authorized by Magniflex.
  • Product failure caused by factors other than defective workmanship or material.

In addition to the foregoing, this limited warranty on our mattresses shall not apply to:

  • Body impressions, which are a normal occurrence in a sleep set and indicate that the upholstery layers are performing as they were designed to do by conforming to the body’s individual contours. Such compressions are natural and are not considered structural or design defects and, therefore, are NOT covered under the warranty.
  • A normal increase in the softness of the foam that does not affect the pressure-relieving qualities of the mattress.
  • A decrease in thickness or volume up to 2” for mattresses with covers quilted in natural fiber, as natural fiber tends to flatten down with time and usage or as a result of vacuum packing the mattress before shipping.
  • Handles, if present in the product.
  • Indentations NOT greater than one and one-quarter inches (1 1⁄4”).
  • Comfort preference.
  • Transportation and inspection costs.
  • Product purchased from unauthorized retailers or dealers.
  • If the original purchaser does not present proof of purchase, which shows the date, place, and price of purchase of the product.
  • Pillows and other products are not listed in this warranty.