Altra is an American trail running and hiking shoe brand which focuses on comfort and performance. The brand was the first to offer a zero-drop (flat soled) running shoe in 2011. It continues to innovate with technologies such as foot-shaped soles and quick lacing systems. The brand stands out with the shape of its shoes, developed to conform to the human foot shape to improve performance and reduce the risk of injuries. Altra also offers a range of walking and hiking shoes for outdoor enthusiasts looking for comfortable and efficient models.