Both knits and bags have warnings about metal attachments, so how should they be washed?

The same sentence appears repeatedly across different garments. This warning is included in the guide for the alpaca halter knit with prominent fuzz^[1], and the same item is included for the hairy knit skirt of similar texture^[2]. It continues unchanged on the washed maxi denim skirt with completely different material^[3], and is attached even to a rectangular bag that is not clothing^[4]. A bustier layered T-shirt suitable for summer wear is no exception^[5]. What these five items have in common is not their materials, but a single line of warning that rust may form on metal parts when exposed to water.

Then, what does metal attachments refer to? Generally, in clothing, they point to zippers and sliders, snap buttons, hook-and-eye closures, eyelets, and decorative rings or charms, and for bags, connecting rings, magnetic closures, and bottom studs are added. However, it has not yet been confirmed which metals are attached where on each product, so it is more accurate to check the physical items directly before washing.

Additional brand instructions regarding care methods have not been confirmed. Generally, garments with metal accessories are cared for by avoiding water washing and using dry cleaning or spot-cleaning contaminated areas only; if submerged in water, they are thoroughly rinsed so no detergent remains, the moisture on the metal parts is blotted dry with a dry cloth, and they are dried immediately. It is also known that folding them wet or storing them in a humid place for a long time easily initiates corrosion, and once rust water forms and bleeds into the fabric, it is difficult to remove. However, whether this information applies directly to these products has not been confirmed.

hmmm, what the brand provided is exactly one point where risk arises — a single line that makes you look at accessories before materials when choosing a washing method.