Arm warmers are generally fingerless "sleeves" worn on the arms, but can also describe any glove-like clothing articles that lack finger coverings and/or were originally designed to keep wrists and lower arms warm.
Leg warmers are similar to socks but generally thicker and footless. Usually worn to keep the lower legs warm in colder weather, they can be tubular sleeves, long fabric wrappings, or simple fur or fabric tied around the calves.
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