Question 1

How often do you recommend replacing this pillow?  I mean, the foam can't last forever, right?

Accepted Answer

This is a great neck pillow. I have had mine for 5 years and am just needing to replace it. 
It doesn’t break down like most pillows.

Question 2

I have knots in my neck always. Would this foam make my neck more sore? Double Core or Tri Core Excel or Iso Cool so many choices?

Accepted Answer

The Tri Core Excel helped me for a while, but it broke down pretty quickly.  The quality of these pillows isn't such that they last long.  I eventually ended up with this Iso-cool contour pillow: http://www.amazon.com/gp/product/B000ZK7MPG/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1  It isn't perfect, but it is the best I have found.

Question 3

Which level of support lobes does this pillow include?

Accepted Answer

they include 3 levels of support lobes

Question 4

what is the foam made of?  Not the cores. The rest of the pillow. Is it polyurethane foam?

Accepted Answer

I found this on Core Website, Says Foam then explains about the polyurethane foam, so my guess would be polyurethane foam:A.  Fiber:  Allows for comfort and support.  High quality fiber is blown to exact specification to insure uniform distribution and pillow weight.    Originally used to emulate features of natural down pillows & used in comfort for accommodation.    Advances in fiber have resulted in great ability to comfort & support.    Core Pillows use conjugated fiber which acts like a spring.     During manufacturing, high pressure will link fibers together & different resiliency levels can be created in the pillow.  This process helps fiber stay in place and resists migration, yielding consistent support as fiber generally has amorphous tendencies and can clump or rat tail during cleaning.    Foam can offer the most consistent support but Fiber currently can offer almost as much but with more comfort.    Fiber material is available in wide array of sizes, shapes & coatings.    Has ability to perform as either a semi-solid or semi-fluid.    Has natural flame retardance & durability.B.  Polyurethane Foam:  Has memory to return to original shape.  All of the foam used can be classified by two measurements: 1.  Density and 2. Indent Load Deflection (ILD). Foam pillows have been around for quite some time.  Over the years it has been cut and shaped to provide support and/or correction.  **General considered the most supportive pillow material with the longest lifespan of use.      Availability in immense variety of densities, firmness.    Excellent resiliency & shape retention

ASIN	B002BUF1CE
Age Range Description	Adult
Best Sellers Rank	#320,374 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #561 in Neck & Cervical Pillows
Brand Name	Core Products
Color	White
Customer Reviews	4.3 4.3 out of 5 stars (283)
Fabric Type	Cotton
Fill Material	Polyurethane (PU)
Global Trade Identification Number	00782944017213
Item Dimensions L x W	16"L x 22"W
Item Firmness Description	Firm
Item Type Name	Core Products Double Core Select Contoured Foam Cervical Support Pillow, 4 Adjustable Neck Support Rolls & Pillowcase Included
Item Weight	1.85 Pounds
Manufacturer	Core Products
Manufacturer Part Number	FOM-172
Manufacturer Warranty Description	3 Year Manufacturer
Material Type	Cotton, Polyester
Model Name	FOM-172
Model Number	FOM-172
Number of Pieces	1
Pattern	Solid
Product Care Instructions	Hand Wash Only
Recommended Uses For Product	Core Products Double Core Select Contoured Foam Cervical Support Pillow, 4 Adjustable Neck Support Rolls & Pillowcase Included
Shape	Rectangular
Size	5 Piece Set
Special Features	Interchangeable Core Inserts
Specific Uses For Product	Neck Pain
Target Use Body Part	Neck
UPC	782944017213 010315398907 716963551281 643989103302 785923396859
Unit Count	1.0 Count

Adjustable Cervical Pillow for Neck Pain Relief, Side & Back Sleepers | Double Core Select features four interchangeable support cores for personalized cervical support and spinal alignment.

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