What kind of yarn is the 'combed yarn' that appears in every t-shirt description?

For this brand, the word combed yarn is not a boast for one specific garment, but appears repeatedly in descriptions of multiple t-shirts. Both the flat chest t-shirt and the short-sleeve t-shirt from the Symmetric line use fabric knitted from combed yarn, which reduces impurities in the yarn and refines quality uniformly through a combing process^[1][2]. In the Hearts graphic t-shirt, an additional number is attached to the same yarn, identifying it as a single jersey knitted from 16-count combed yarn^[3].

Combing is a process of combing raw cotton before spinning to filter out short fibers and impurities. Because it leaves only long fibers, the surface tends to be relatively smooth with less pilling, and it is considered more uniform than yarn that has not undergone this process. Count is a yarn count representing the thickness of yarn, where a smaller number means thicker yarn. Single jersey refers to the most basic knit structure that comes out flat on one side.

However, this sentence is not attached to every t-shirt. In the descriptions of the Symmetric emb crew-neck and handsign selfie t-shirts, instead of yarn talk, the weight is placed on knitting with a structure featuring solid density, durability, and a smooth surface feel^[4][5].

hmmm, whether the yarn name appears or the structure is discussed, both explanations seem to point to the same thing in the end — the order of putting the nature of the fabric first, ahead of print or silhouette.