1977 Playtex Superlook Panties commercial from the UK.
Playtex is a well-known brand (and trademark). It used to be associated with bras and women’s undergarments. Currently there are two separate companies with the Playtex name.
The women’s undergarment Playtex manufactures feminine hygiene and infant care products. The name comes from “perforated latex” which sandwiched between cloth gave the underwear its elastic and body-shaping character.
A children’s diaper and other baby products company also bears the PlayTex name. This has been and continues to be a source of confusion.
Info gleaned from Wikipedia