That pesky tag on the left inside seam of all your clothing actually has a lot to say and half of it pertains to you. Some haven many layers while others may have one, they are all stating the same labeling standards. Within the USA, the Federal Trade Commission (FTC) administers mandatory labeling requirements that affect an apparel firm's product development activities. There are 4 mandatory labeling requirements: Fiber content, identification of manufacturer, country of origin, and care.
The Textile Fiber Productions Identification Act requires a garment label to disclose the fiber content which is identified by the generic name.
The FTC registers an identification number or brand name for each manufacture. This is often written on the label as RNxxx.
The country of origin is where the product was produced. This is determined by where the garment was "substantially transformed." The COO becomes tricky when several locations are involved, this is then written as "Made in USA of imported fabric" or "Made in [name of country], finished in USA."
The care label ruling requires apparel to carry permanently affixed label with instructions on regular care. This is where it reads "Hand Wash Only," "Wash With Like Colors" or "Tumble Dry Low" along with many crazy symbols instructing further care.