I think it's so odd that no hair pins are allowed in ice skating; when DD's played soccer, they couldn't have any metal clips in their hair. Yet, my gymnast daughter is REQUIRED to have a bun that takes load of hair pins. The girls are doing back extensions where they roll over on their heads, etc. They could certainly have a high speed fall if a vault goes bad. I wonder why the gynamstics world lets the girls wear metal clips and pins?