An article of clothing (10) comprising: a first portion (14) shaped to cover at least part of a wearer's groin or buttock region during use and extending into a gusset region of the article, and a second portion (16) shaped to extend around a wearer's body so as to hold the article against the wearer during use. The first portion (14) comprises a carbon textile layer and a backing layer, the filter layer comprising a knitted material comprising activated carbon. The second material (16) comprises one or more textile panels adjacent said first portion (14) and having elasticity greater than the elasticity of the first portion such that the second portion conforms to the shape of the wearer's body.