Garters are elastic bands worn around the thigh to keep thighhighs up.
Garters are different from garter belts, garter straps, and leg garters. A garter belt is worn around the waist and uses straps clipped to the top of the thighhighs to hold them up. Garter straps are the straps themselves. A leg garter is a single decorative band worn around the thigh that is not used to hold up a pair of thighhighs.