NPT4™ introduces the latest advances in pressure redistribution foam support surfaces—with Microclimate Management (MCM) pump, next-gen fabric technology, and new CuPro™ copper-infused foam. The result: a hyper-responsive mattress which keeps patients cool, reduces and treats pressure injuries, and stands up to the most demanding cleaning protocols. NPT4 is part of the Envy® line—made with materials that reduce chemicals of concern.

The Latest Fabric Technology

Our fabrics and construction make the difference. Multiple layers work together to manage the microclimate and reduce shear—while creating a durable shield to withstand hospital cleaning protocols.


Microclimate Management

Microclimate is literally the weather on a patient’s skin: humidity and heat on the support surface/skin interface can create the perfect storm for pressure injuries. NPT4’s microclimate management pump provides a continuous, head-to-heel layer of air—keeping the patient cool and dry.


1-in-2 Alternation

In addition to MCM, NPT4's pump adds alternation and an extra level of adjustable, healing comfort. The support surface’s nine foam-filled air cells are cyclically offloaded—reducing the pressure in half of the cells every five minutes, and then alternating to the remaining cells.

AirSpace™ 3D Mesh

An added layer of technology, AirSpace™ 3D mesh maintains optimal airflow, keeping the patient cool and dry.

Alternating Pump with Microclimate Management

A layer of air keeps the skin cool and dry, reducing pressure injuries. 1-in-2 alternation ensures that cells are offloaded 50% of the time—promoting comfort and healing.

CuPro™ Foam

NPT4 introduces CuPro™ copper-infused, thermoresponsive foam to our lineup. The foam breathes more freely, adding to NPT4’s microclimate management performance, and the copper particles help dissipate heat more efficiently, keeping the patient cool while reacting to temperature and weight.

Vented Technology

Air is vented in and out of the mattress until equalization is reached; ensuring pressure equalization. This maximizes immersion and provides advanced pressure redistribution for all body types.

Infection Control and Prevention

Most medical mattresses utilize top cover fabric easily compromised by harsh cleaning chemicals, and sewing methods used during production punch thousands of tiny holes in the fabric. Both realities create openings for fluid ingress and contamination of internal components. NPT4 is designed with advanced technologies for improved infection control.

MAP Liner™

For the highest level of protection, NPT4 features our industry-first Mattress Asset Protection (MAP) Liner™. This additional barrier protects the foam and other internal components from contamination, extending the life of your investment.

RF-Welded Seams

Instead of needle-sewn construction, NPT4™ is designed with radio-frequency welded seams, eliminating needle holes and providing a superior fluid barrier.

FDA and TJC Recommendations: Damaged or Worn Covers

NPT4™ specifically addresses the FDA’s 2013 infection control warning related to damaged mattresses1 and its additional guidance in 2017.2,3 The mattress also supports The Joint Commission’s National Patient Safety Goals® program to prevent errors and maintain patient safety—specifically NPSG.07.03.01: Reduce the risk of healthcare-associated infections.4,5

Read Safety Communication

Extreme Polycarbonate Top Cover

NPT4™ is designed with an extreme polycarbonate fabric which resists cleaning chemicals—supporting CDC cleaning guidelines and a higher level of infection control and prevention.

Mattress Audit Program

The Sizewise Mattress Audit Program includes a no-charge inspection of up-to ten mattresses, a written report documenting any findings, and expert recommendations on repair or replacement.

Key Specifications

Surface Width 35", 39", or 48"
Surface Length 80", 82", 84", or 80-86"
Therapy Mode(s) Convertible: Active or
Reactive Pressure Redistribution
Weight Capacity 500 or 1,000 lb.

Clinical Use

PI Prevention/Treatment
Wound Care


Capital Purchase

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1. Damaged or Worn Covers for Medical Bed Mattresses Pose Risk of Contamination and Patient Infection. (2013, Apr. 19). U.S. Food and Drug Administration. Retrieved from wayback.archive-it. org/7993/20170722215739/https:/ Safety/AlertsandNotices/ucm348016.htm 
2. Keeping Patients Safe from Contaminated Mattresses. (2017, Nov. 20). U.S. Food and Drug Administration. Retrieved from www.fda. gov/downloads/MedicalDevices/ProductsandMedicalProcedures/ GeneralHospitalDevicesandSupplies/HospitalBeds/UCM585910.pdf 
3. Covers for Hospital Bed Mattresses: Learn How to Keep Them Safe. (2017, Nov. 20). U.S. Food and Drug Administration. Retrieved from GeneralHospitalDevicesandSupplies/HospitalBeds/ucm585737.htm 
4. 2018 National Patient Safety Goals. (2018). The Joint Commission. Accessed online: information/npsgs.aspx 5. 2018 National Patient Safety Goals Effective January 2018 – Hospital Accreditation Program. (2017, Nov. 15). The Joint Commission. Accessed online: hap_2017_npsgs/
5. 2018 National Patient Safety Goals Effective January 2018 – Hospital Accreditation Program. (2017, Nov. 15). The Joint Commission. Accessed online: hap_2017_npsgs/