The idols of this "culture" wear baggy jeans without belts, emulating prisoners in the US.
Slightly off topic but strangely this has been heavily debated. Partly because it is suggested that baggy jeans in US prisons were a sign of homosexuality given that it wasn't possible to cottage in prison.
Alternative explanations have been offered, that in poorer families clothes were handed down so the baggier your jeans the bigger your brother. Also it has been suggested it was actually started in the skater/surfer community or that it was easier to conceal a weapon in baggy clothing.