panty

a stretchy helmet cover that is used to designate the jammer (with a star) or a pivot (with a stripe).
Found on http://svrollergirls.wordpress.com/roller-derby-a-glossary/

PANTY

a stretchy helmet cover that is used to designate the jammer (with a star) or a pivot (with a stripe).
Found on http://junctioncityrollerdolls.com/about/roller-derby-glossary/

Panty

a stretchy helmet cover that is used to designate the jammer (with a star) or a pivot (with a stripe).
Found on http://talknderby.blogspot.co.uk/2010/12/roller-derby-terminology.html
No exact match found