Rips cardboard filters are a form of filter that do not restrict the draw or flavour of the cigarette and filter the smoke as it passes over the card. Although they filter less than a fibrous filter they are great for those who want a fuller flavour but not a mouth full of bits.
The Rips Roach filters are the only filters with the perforations, which when folded before rolling make fins in the centre of the filter to make it firmer and putting more surface area for the smoke to pass over.