This is a vintage Mecca S/S Fabric Patchwork Buttondown shirt in a blue/multi colorway.
Ralph Lauren
Carhartt WIP
Aquascutum
American Trench
Union Los Angeles
Carhartt
Junya Watanabe Man
Marni
Kardo
STORY MFG.
Clot
Rokit
Nautica
Maison Margiela
Helas
Nepenthes Online Store
Obey