The RX4 was designed as a sporty all-round comfort harness. The dynamic outer shape and elegant design emphasize its sporty character. Great importance was attached to maximum protection – the innovative foam protector offers outstanding safety right from the critical start phase. A new type of foam mixture delivers the remarkable damping values of 28.5 G and is characterized by very fast regeneration after compression. This was impressively confirmed during the approval process: the three test runs were completed with a break of just 10 minutes, although 30 minutes is standard. The RX4 was developed from practical experience for practical use. Under the direction of Jens Salomon, the influences of over 25 flying instructors have been incorporated into the development. This includes the modular agility system, which offers three individual adjustment options to dampen the movement of the glider. The first level (green) helps to dampen reaction behavior and even compensates for wings that tend to be unstable. At the middle level (yellow), damping and movement are balanced and at the third level (red), movements are transmitted undamped as in sport mode. The three levels are color-coded and can be adjusted to the pilot’s personal requirements before the flight.   The RX4 is aimed at all pilots who are looking for a sporty all-round harness with a very high level of comfort and safety. It is suitable for beginners, pleasure pilots and ambitious cross-country pilots who prefer a seat harness. It combines all the advantages of a comfortable all-round harness with high-quality workmanship, designed for long-term use.