Trousers, slacks, or pants are an item of clothing worn from the waist to anywhere between the knees and the ankles, covering both legs separately . Shorts are similar to trousers, but with legs that come down only as far as the knee, but may be considerably shorter depending on the style of the garment. To distinguish them from shorts, trousers may be called "long trousers" in certain contexts such as school uniform, where tailored shorts may be called "short trousers" in the UK.