Slippers

Some of the nicest slippers are made by Drapers of Glastonbury in England. A variety made of leather or cloth, and with or without shearling wool lining.

Anton Shearling

Charles Leather

Maine Shearling Moccasin

Guayabera shirts

Pronounced "gwy-e-bara" or "gwy-e-vara" (aka camisa de Yucatán), guayabera are lightweight linen or cotton (occasionally silk) shirts with a distinctive vertical pleat or design in the weave which makes it stand out from a plain cotton or linen shirts. It can be short or long sleeved, and usually have two breast pockets. They are thought to be originally from the Philippines but became very popular in Cuba and are now popular throughout Latin America.

The guayabera, especially the short sleeved version, looks quite casual, but according to Wikipedia: "The guayabera is often worn in formal contexts, such as offices and weddings. In Cuba, the Dominican Republic, Mexico, and Puerto Rico guayaberas are part of the traditional wear for men and may be considered formal wear^. In 2010, Cuba reinstated the guayabera as the "official formal dress garment."

For Cubavera brand shirts my size is "Large."

Cubavera 100% linen

Guayaberas y Mas linen	Dos Carolinas cotton

Suppliers:
Cubavera 100% linen guayabera shirts (under "Fabric Type" select "100% Linen").
Dos Carolinas cotton guayabera shirts.
Guayaberas y Mas linen guayabera shirts.

Source: Wikipedia