It is Chinese size and smaller than the USA size.
Please check the size carefully.
US Small=China Medium
US Medium=China Large
US Large=China X-Large
Dear friend,thanks for coming to our store.The size is Chinese size, please select it carefully, thank you!
Package:Other accessories not include
US Small=China Medium;
US Medium=China Large;
US Large=China X-Large;
US X-Large=China 2X-Large;
US 2X-Large=China 3X-Large;
US 3X-Large=China 4X-Large;
SportsX Men's Chinese Style Linen Spring Summer Cardi Retro Dress Shirts Top - B07FRZK89Q