No records
|
MNO
|
Natural Fibers
|
Any fiber that comes from a natural rather than artificial source and is made through natural means. Wool, cotton, silk, horsehair are examples. They can be used a layer of a mattress or woven into a fabric. |
|
|
PQRS
|
PPP
|
A term used on the site that stands for Posture and alignment, Pressure relief, and Personal preferences. These are the 3 main criteria that define 'your perfect mattress' and the goal of all mattress design and theory is to match these basic needs and preferences to the unique body type, sleeping style, and individual preferences of each person.
|
|
|
PQRS
|
Pressure Relief
|
The ability of a material to form a cradle to the shape of a body which redistributes weight over the surface of the mattress and relieves pressure on the body prominences or pressure points of each sleeping position. Different designs, materials, and mattress layering and construction methods have differing abilities to relieve pressure depending on each persons body type and sleeping style. |
|
|
PQRS
|
Resilience
|
This is the amount of energy that is stored by a material and causes it to "bounce back" after a weight is removed. It is also connected to how quickly the material bounces back. It is measured by dropping a ball on a material and measuring the height of the bounce as a percentage of the height from which it was dropped. Higher resilience polyfoam is often higher quality than lower resilience polyfoam and resilience is an important part of both the feel of a material and it's ability to allow freedom of movement. |
|
|
PQRS
|
Response Curve
|
This is the graph produced by the increasing amount of resistance to pressure of a material. Higher response curves allow a material to be both more pressure relieving with initial compression and supportive with deeper compression. Very similar to Comfort Factor. An upward curve is "better" than a straight line. |
|
|
PQRS
|
Sinking Down
|
This is used in a specific way on this website. It means how far in total the heavier parts of your body sink into a mattress in total. It determines spinal alignment rather than pressure relief. |
|
|
PQRS
|
Sinking In
|
This is used in a specific way on this website. It means how deeply you sink into a comfort layer material and the depth of the pressure relieving cradle that is formed. It is different from "sinking down". |
|
|
PQRS
|
Spinal Alignment
|
The goal of perfect support is to keep the spine in its natural alignment in all sleeping positions. |
|
|
PQRS
|
Support
|
A term often misused in the industry. It is a measure of how well a mattress supports and maintains the neutral alignment of the spine and joints. The primary support or deeper layers are mainly responsible for stopping the heavier pelvic girdle from sinking down too far into the mattress relative to the other lighter parts of the body while the upper or comfort layers provide the secondary or lighter support which fills in the gaps in the sleeping profile (like the waist or lower back) and helps to maintain the inward curves of the body and the spine in natural alignment. |
|
|
PQRS
|
Support Factor
|
This is the 65% IFD (how much weight it takes to compress a material 65% of it's thickness) divided by the 25% IFD. It is a measurement of the progressive resistance of a material. Higher quality materials will have a higher progressive resistance and although it is less well known or talked about in the industry, it is at least as important as ILD in determining the comfort and support qualities of a material.
AKA: Comfort Factor |
|
|