Introduction
The document introduces the TWINFORCE RE4, an acrobatic tandem paraglider developed by U-Turn, designed to make acrobatics accessible to passengers. It highlights the innovation and technical mastery behind the wing, which allows for dynamic maneuvers such as the Infinity Tumbling.

Specifications
The TWINFORCE RE4 is built for experienced acro pilots and trainers. It features a flat area of 31 m², a projected area of 27.007 m², and a flat wingspan of 13.217 m. The glider supports a start weight of 140-200 kg and has a V-trim speed of 41-44 km/h, with a maximum speed of 48-52 km/h. It consists of 50 cells and weighs 9.8 kg.

Technical Innovations
The paraglider incorporates several advanced features, including the Precision Profile Nose (PPN) for improved airflow, Pressure Balance Valves (PBV) for maintaining dynamic pressure, and High Pressure Crossport Design (HPCD) for balanced internal pressure. The Stabilo Security Function (SSF) is included for safety during swaying movements.

Materials and Durability
The TWINFORCE RE4 uses PX40, a robust material developed by U-Turn, known for its tear resistance and durability under extreme conditions. This makes it the strongest wing ever built by the company.

Target Audience
The wing is intended for experienced acro pilots who wish to introduce passengers to paragliding acrobatics. It also serves as a training tool for future acro pilots. Due to the high demands on the pilot's skills, the glider is only available to those who can demonstrate their capability.

Conclusion
The TWINFORCE RE4 is a high-performance acrobatic paraglider designed for dynamic maneuvers and durability. It represents a significant advancement in paragliding technology, offering new opportunities for acro pilots and their passengers.