derek guy on X: "@Texaspaleo Don't know if you're joking, but this is not the reason why it's called a "sack suit." The term "sack suit" is a shorthand for Brooks Brothers'
The American Suit: Sack Suits & Beyond -
Vintage 80's 90's brooks Brothers 2 Piece Suit. 'new Old Stock' Olive Cotton. Sack 3/2 Roll Jacket Flat Front Pant. 43 44 Reg X 36 W - Etsy Israel