Hi Jewels,
Unfortunately the law tag only provides generic information about the type of material but not the specific layering or any information about the quality/density of the materials so I would need to know the specifics of the layers in the mattress to make any meaningful comments about the quality of the materials or the mattress.
Textile clippings are used for shoddy pads which are used over an innerspring to help prevent the layers above it from compressing into the springs and to even out the support of the springs and provide some additional padding. They use a resin to bond the clippings into a “layer” (see here and here).
I would tend to avoid major brands such as Serta but if they can provide you with the specifics of the materials and layers in the mattress (which is unlikely) then I’d be happy to make some comments about the quality of the materials. If you can’t find out the information you need then I would treat “unknown” materials in the same way as “low quality” materials.
I would first complete your list of finalists (one at each store you are dealing with) before you cross anything off your list so that you can make a final choice based on “best judgement” and on all the parts of your personal value equation that are most important to you. A 2" polyfoam quilting layer is “on the edge” of being a weak link so it isn’t bad but it also isn’t ideal either but it may also turn out to be the best that is available to you out of the local options you are looking at or considering.
Phoenix