Breather material is a polyester cloth that allows air/gas to pass and excess resin to be absorbed during the vacuum lay-up process. It allows pressure to be applied more evenly across the system. Breather material goes between your laminate and the breather film (perforated plastic). Breather material is single use as it collects any excess resin.
Breather material is available per meter and is 1.5m wide 80gsm weight.