Size details:
US X-Small=China Medium 38:Chest:38.58"(98cm),Length:28.74"(73cm);
US Small=China Large 39:Chest:40.16"(102cm),Length:29.53"(75cm);
US Medium=China X-Large 40:Chest:41.73"(106cm),Length:30.31"(77cm);
US Large=China XX-Large 41:Chest:43.31"(110cm),Length:31.10"(79cm);
US X-Large=China XXX-Large 42:Chest:44.88"(114cm),Length:31.89"(81cm);
US XX-Large=China 4X-Large 43:Chest:46.46"(118cm),Length:32.68"(83cm);

• Our size is small than US size,pls check 2 size up.
• US Medium=China X-Large 40:Chest:41.73"(106cm),Length:30.31"(77cm)
• US Large=China XX-Large 41:Chest:43.31"(110cm),Length:31.10"(79cm)
• US X-Large=China XXX-Large 42:Chest:44.88"(114cm),Length:31.89"(81cm)
• US XX-Large=China 4X-Large 43:Chest:46.46"(118cm),Length:32.68"(83cm)

Our size is small than US size,pls check 2 size up.