These pants are made with Interlock material which is soft to the touch and gentle to the skin. Extra material around the knees to contribute to freedom of movement. Wide waist band to secure pants during action. Dry wick material to avoid wetness and heavy material feeling.Fabric Details:: 79% recycled poly, 21% spandex High Stretch Black Pants With Built-in Shorts, Functional Breathable Full-length Bottoms, Functional Full Length High Stretch Bottoms, Functional Breathable Full Length Bottoms, Functional Full Length Breathable Bottoms, Breathable Stretch Functional Bottoms, Functional Breathable Stretch Bottoms, Breathable Stretch Bottoms For Functional Wear, Tight Sportswear Bottoms For Training