My Yuna (Hiyoko-chan) actually made the glasses for the group but if I remember correctly, I believe she used a thin plexiglass that she heat molded to the shape of the visor. She used a plexiglass paint/film to make the visor green (which the film kinda distorts your vision a bit XD it's kinda funny!). The pink part is just painted craftfoam glued on. The silver "wings" are sculpted from model magic then sanded, painted, and glued on. The whole visor is attached to an elastic band so it stays on your head . I hope that helps!!
it's the psychic dressphere that was only in the FFX-2 International Last Mission game that was only released in Japan. So sad....but you can watch the entire thing on Youtube!