n.not wearing a jacket
"in your shirtsleeves"; "in hot weather they dined in their shirtsleeves"
Shirtsleeves to Shirtsleeves
Shirtsleeves rolled or collar turned up
A President in shirtsleeves.
Shirtsleeves to Shirtsleeves in three Generations
From Shirtsleeves to Shirtsleeves in a Long Lifetime
Shirtsleeves to Shirtsleeves: The Economics of Social Mobility
Helping Relief Effort, in Shirtsleeves
Brown Orders Hard Work, MPs Could Move to Oxford, and Speaker Bans Shirtsleeves
Guerreiro ramos and the sociology in "shirtsleeves": an interventionist proposition in social change processes
Frontiers of Research in Economic Theory: Shirtsleeves to Shirtsleeves: The Economics of Social Mobility (1996)