This article of clothing has been laundered. This article of clothing is in very good condition for the age. Size 40 in Mexico, American appears to be small /medium. For accuracy on sizing please view detailed photos for measurements. View all photos carefully for condition and details. If there are any questions with respect to a buying decision please reach out. This has been well preserved, and a solid example of a well preserved article of clothing. Most likely a tourist piece from the late 70’s to early 80’s.Thank you.