This invention, the support section which at least surrounds the top of the gluteal area and each thigh the collection bag (10) which possesses the flexibiility which is arranged in (2) and the crotch section and, the underwear which is included regards (1).本発明は、少なくとも臀部及び各大腿部の上部を囲繞する支持部(2)と、股部中に配置された可撓性を有する収集バッグ(10)と、を含む下着(1)に関する。