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Term Definition
Are “mini” inner springs designed specifically for use as part of a comfort layer of a mattress and can be both pressure relieving and supportive.
They are made from thinner more flexible wire, have more coils (usually over 800) and have less thickness so they can fit in a “eurotop" or "boxtop" mattress since they cannot be made as thin as foam or fibers. They are typically used with a thin foam layer or quilting layer over them so you won’t feel the individual coils. As a comfort layer, they are much more pressure relieving and comfortable than sleeping directly on their more supportive innerspring cousins.