Bath sponge that's really a tropical gourd
The fully developed fruit is the source of the loofah scrubbing sponge which is ... 
of L. aegyptiaca may be allowed to mature and used as a bath or kitchen sponge
... [DOC] [TLE] Luffa.info - Luffa/Loofah/Luffah/Loofa/Loufa/Luff Sponge Gourd ... [PAR] Here is information, photos and video about the amazing Luffa sponge gourd.