Magniflex MagniStretch 12 Mattress - Active Spinal Traction
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.
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.

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


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.
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.
The MagniStretch 12 holds a 12" profile across every size in the collection.
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.
38" wide x 74" long
12" High
38" wide x 80" long
12" High
54" wide x 75" long
12" High
60" wide x 80" long
12" High
76" wide x 80" long
12" High
72" wide x 84" long
12" High
38" wide x 80" long (each piece)
12" High
*Dimensions of each individual mattress may vary.
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.
Our mattress limited warranty shall NOT apply in the following circumstances: