A newer innovation by Zodiac Seats U.S. (formerly Weber Aircraft LLC) is an articulating seat bottom, where the seat bottom moves forward in addition to the seat back tilting backwards.[5] Such seats have been installed in some of the aircraft of Aer Lingus, Delta Air Lines, Emirates[citation needed], American Airlines, and Avianca, amongst others. This seating was eventually adopted by competitors such as B/E Aerospace and Recaro.