This is a Museum Garments Dad Shirt in a Blue & White checkered pattern.
Norse Projects
A.P.C.
Workaday
Universal Works
Gramicci
Junya Watanabe Man
Alex Crane
Carhartt
Aimé Leon Dore
WTAPS
Garment Project
Mfpen
Engineered Garments
Givenchy
Far Afield
Sale
COMME des GARÇONS