08-08-2025, 03:31 AM
Flat-chested morphology requires precise muscle control. The competition-grade flat chested sex doll has shape-memory alloy wire implanted in the pectoralis major area. When the arms are raised, they automatically tighten to create the thin, youthful muscle lines. The traditional life size sex doll relies on fillers for shaping, but this technology creates a soft, flat surface when still and reveals the interconnected structure of the intercostal and rectus abdominis muscles during movement, enhancing dynamic realism by 300%. Bioelectrical stimulation devices even precisely match the speed of muscle contraction to real-life delays.