When it comes to the leading edge Strobl relies on the U-Turn-typical high tech design with pressure-optimized opening sizes and the Precision Profile Nose (PPN) to improve the inflow in the nose area. In correspondence with the valves in the bottom sail the glider is a pure dynamic weapon. The additional aeration through the Pressure Balance Valves (PBV) in the bottom sail is an innovative invention by U-Turn. Through the PBV the wing is provided with the necessary dynamic pressure even in inconvenient angles of attack and therefore offers a higher range of tolerance in the extreme angles of attack which occur during the acrobatic flight. The High Pressure Crossport Design (HPCD) optimizes the lateral aeration, for a balanced internal pressure of the wing. All attachment points are reinforced multiple times. Like all other U-Turn acro gliders the TWINFORCE RE4 is also equipped with the Stabilo Security Function (SSF), to quickly resolve the situation when making a swaying movement.