Siux Electra ST3 JuniorLearn Faster, Swing Easier, Play with Confidence. The Siux Electra ST3 Junior is designed specifically for young padel players who are learning the game and need a lightweight, comfortable and easy to handle racket. Built with a soft core and junior friendly frame, it supports proper technique, smooth swing mechanics and consistent control helping kids progress quickly while enjoying every session. Engineered for Junior Development This racket is