knee-high
adj//ˌniˈhaɪ//knähög, knästrumpa
Used other than figuratively or idiomatically: see knee, high: reaching to the height of a person's knees.
(US, usually, in the plural) A sock or stocking that reaches to the knees; chiefly, women's nylon stockings that end slightly above the knee and are supported by garter belts.