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 design 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.