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unisex shoes 
Shoes worn by members of both sexes.
moccasin 
Flat, very soft slip-on casual shoe with ridged seams; it is characterized by an apron sewn onto the vamp, which molds to the instep.
mule 
Flat light, usually indoor shoe; it has a vamp only, leaving the heel bare.
loafer 
Dressy moccasin with a flat heel.
clog 
Toeless mule with a thick, generally wooden sole; it is held on the foot by a thick strap.
espadrille 
Canvas shoe characterized by a woven rope sole; it is held on the foot by a lace tied around the ankle.