The phrase "classic staple" refers to something that is considered traditional, essential, and timeless. It is something that is commonly used or consumed over a long period of time.
Sentences with «classic staple»
They have so much stretch and look so flattering on - a great classic staple for your closet! (girlmeetsbowblog.com)
I guess a diamond is truly the most classic staple piece there is. (lc-steele.com)
You can never go wrong with classic staples such as a white button - down and black pants. (lauralily.com)