Does the term 'banding treatment' in the cap description mean the same thing as an elastane band?

Looking at several RYOO caps side by side, the descriptions for the back split into two ways. Symmetric Nylon-cap #6 [silver] states that the size is adjusted with an elastane band at the back^[1]. Symmetric R-logo cap #9, in both blue and navy, simply states banding treatment^[2][3].

The reason the wording differs is that the two words point to different levels of meaning. Elastane is the name of a fiber characterized by stretching well and returning to its original length, while banding is an umbrella term referring to sewing treatments where such elastic materials are inserted to tighten the circumference. One speaks to what it is made of, while the other speaks to how it was treated.

From the wearer's standpoint, what matters is the nature of the adjustment method. A cap with a band at the back is not a structure adjusted in designated steps like snapback buttons or velcro, but a structure that stretches and adjusts as much as the head goes in. Although you cannot adjust it by counting increments, putting it on and taking it off finishes in one motion.

hmmm, whether referring to the material or the treatment, this brand's cap descriptions repeatedly convey one thing: the back stretches.