The SF-22 Solla combines TUSA’s rich history of performance fin design with the latest advanced materials and hydrodynamic innovations. A completely new design, the Solla has several unique features that deliver superior propulsion, speed and maneuverability. The Universal Bungee Strap is adjustable, and one-size fits all. It’s comfort-flex hinge, and rubber heel cup with a finger loop make for an easy fit.