they are next years "custom" taken in Nike 6.0 pants. holden makes some slimmer fitting pants but idk bout the white. best bet is to find some decently fitted white pants and take em to a seamstriss (sp). she wil do a proffessional job and not that cheap.
holden has some cream coloured ones. their kinda off white though. Oakley has some next year that i'm 75% sure will be white. When jossi was rocking oakley still he had white tight pants.