what is IFD VS ILD to determine softness or firmness?
596318
IFD = Indention Force Deflection; ILD = Indention Load Deflection. Force and Load are synonymous, thus IFD = ILD. ILD is widely used in the Foam industry, but technically, IFD is the more "correct" acronym, since that is what ASTM (American Society of Testing and Materials) calls it in the test that determines the IFD value. But again, IFD = ILD. Different industries, vendors, or people will call it one or the other (whatever they are used to). To get really technical, IFD is defined as the amount of force (in pounds), required to "indent" a 50 square inch round plate into a foam specimen a certain percentage (usually 25%) of the specimen's total thickness (usually 4 inches). ILD/IFD reference values: Soft = 14-22; Firm &gt; 34.
1538924
Check your email that asked what level of firmness you wanted, should be a phone number at the bottom
509931
ILD stands for "Indentation Load Deflection". It is the pounds force required on a 50 square inch disk required to deflect the foam sample by 25% (usually). For more than you want to know, see the link xxxhttp://www.pfa.org/jifsg/jifsgs4.html (take out the xxx).
10421
Very full which some people could consider firm, but extremely soft. If that makes any sense. There is no hardness to the pillow. Very thick and deep.
1385565
The manufacturers website lists it as 5lb density with 20 ILD for the memory foam comfort layer, the support layer is listed at 1.8lb density with 36 ILD.
753429
It's in between. A bit softer to the touch, but firmer when you're laying on it.
1122811
Micro fiber is nice and soft and cushions are well insulated and they are neither firm or soft but they are more soft then firm but not where you sink in. Hope that helps
218117
i do not know. my mattress is soft to medium feel to me. i suggest you call " all sleep" (get their ph number on their website) the company that ships it and ask. the 5 pound density usually should last up to 15 years. their ad did not list the ild. the density rating is the measure of how long before it mats down. (indentation load deflection). i just got another queen topper shipped to my youngest son in calif. about 8 years ago i bought a 6 pound density king size for my other son in calif and it is still like new to them. (from a different sleep company.) " all sleep" is good about returning your call to answer a question. they suggested putting a small bowl of apple cider vinegar on my night stand for a few days to help dissipate the foam smell and i passed the info along to my son. good luck.
1615516
ILD stands for Indentation Load Deflection. In simple terms it is a measurement of how hard or soft a foam is, small numbers being softer and large numbers being firmer. In more accurate terms it's the number of pounds of pressure required to indent 4" of foam by 25% using a 50 square inch indentation. You may also see it referred to as the 25% ILD rating.
766158
I've had both. Gentle is softer, as stated. I prefer the standard because it doesn't flatten out as much over time. However, it is hard and if you like a softer (ie, feather pillow), then go with the gentle. I feel like these pillows only last 6-12mos anyway, so try one hardness, and if you don't like it, buy the other and try it next time. There's not enough difference between the two to make you really not like either one.
780159
It is the height/thickness of the mattress, not the firmness. Firmness depends on the layers in between, read the label carefully.
99496
The answer would be relative to what you are comparing soft or hard too. However, I would say it is a medium touch, in that I have felt lighter and harder.
1044957
This mattress is quilted on both sides, one side is a tack and jump quilting which gives a little softer feel and the other side is a continuous quilt which is a firmer feel. This is how you get the 12 different levels of firmness. Please let me know if you have any other questions. Thank you
691566
Sorry I do not know. I could guess, but that is not going to help you. How about soft is soft and elite is purified more. And I said I wasn't going guess.
1126125
I e-mailed asking the same question in early June and Chuck confirmed that they still use 2 lbs density poly foam in the 12/1 bed.As far as I understand each layer is not a different density as density does not directly equate to softness (ILD), but rather quality/durability. At least 1.8 lbs poly is the usual recommendation. http://www.themattressunderground.com/mattresses/support-cores/polyurethane.html
89287
3 settings for firmness. I like a mattress really firm and I was pleased with how firm it was but I used on the firm setting only
375981
According to my preferences, I would say it is firm, but naturally softens with use. It does hold up to normal wear with repeated use.