latex masking

i am working on my helmet and need to pick up latex masking wherte do i pick up some?

A lot of arts/craft stores should carry this kind of stuff.
When I bought mine, I got it at Michaels. Places like Ben Franklin or Hobby Lobby might carry it too, depending on what you have in your area.

thanks i have a micheals right down the street of me what dept is it in?

It's been a while since I bought it, but I think it was in the art section with the oil paints, brushes, canvas, and all that kind of stuff.
The brand I got is called Winsor & Newton.

Any good art shop should stock it, Windsor and Newton is a good name to go for.