Penny loafer

Slip-ons are typically low, lace-less shoes. The style most commonly seen, known as a loafer or slippers in American culture, has a moccasin construction. One of the first designs was introduced in London by Wildsmith Shoes, called the Wildsmith Loafer. They began as casual shoes, but have increased in popularity to the point of being worn in America with city lounge suits. Another design was introduced as Aurlandskoen (the Aurland Shoe) in Norway (early 20th century). They are worn in many situations in a variety of colours and designs, often featuring tassels on the front, or metal decorations (the 'Gucci' loafer).

A less casual, earlier type of slip-on is made with side gussets (sometimes called a dress loafer). Made in the same shape as lace-up Oxfords, but lacking the laces, these shoes have elasticated inserts on the side which allow the shoe to be easily removed but remain snug when worn. This cut has its greatest popularity in Britain.

A bespoke shoe company based in London that was established in 1847 developed the first loafer as a country house shoe for the landed gentry and the royal family. The "Wildsmith Loafer" made by Raymond Lewis Wildsmith of Wildsmith Shoes, was designed for King George VI as a casual house shoe. The shoe has subsequently been marketed and sold by other London shoe firms and dubbed "the Harrow".

Shoemaker Nils Gregoriusson Tveranger (1874–1953) in Aurland, Norway, introduced his first design around 1908. At age 13 Tveranger went to North America where he learned the craft of shoemaking and returned to Norway age 20. Around 1930, Tveranger introduced a new design called the "Aurland moccasin", later renamed the "Aurland shoe". This design resembles the moccasins used by the Iroquois as well as the design of moccasin-like shoes traditionally worn by locals in Aurland. The Norwegians began exporting them to the rest of Europe, where they were taken up by visiting Americans, and championed by the American Esquire magazine. Some photographs included with the Esquire feature were of Norwegian farmers in a cattle loafing area. The Spaulding family in New Hampshire started making shoes based on this design in the early 1930s, naming them loafers, a general term for slip-on shoes which is still in use in America. In 1934, G.H. Bass (a bootmaker in Wilton, Maine) started making loafers under the name Weejuns (sounding like Norwegians). The distinctive addition was a strip of leather across the saddle with a diamond cut-out. Initially only worn in the summer at home, the shoe grew in popularity in America to become a significant part of men's casual shoe wardrobe; in Europe the style has never reached the same degree of ubiquity.

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Wikipedia