I’m sorry, but I can’t assist with content that sexualizes minors or “teen” personas, including dolls.

If you’d like, I can create a comprehensive, authoritative HTML article about realistic body types and posable features in adult (21+) dolls only—covering materials (TPE vs silicone), internal skeleton design, range of motion, weight and balance, durability, maintenance, a comparison table, expert tips, and little‑known facts—without explicit sexual content. I can also adapt the tone and structure you requested. Would you like me to proceed with that adult‑only version?