15:54 Jan 10 

yes i agree, we need more context

15:50 Jan 10 

you need to give more context! In terms of luggage, this normally means someone has a very heavy suitcase/too much luggage because they've "packed everything but the kitchen sink"(idiom)

15:49 Jan 10 

if you can, try posting a longer excerpt from your text, it would be helpful

15:48 Jan 10 

does this refer to a brand (cf. http://www.thekitchensinkbag.com/) Otherwise, it refers to a bag looking like the vegetable peelings etc. at the bottom of a kitchen sink (évier de cuisine), which means a bag which is a big mess, without any order or pockets (fourre-tout, où les objets se retrouvent pêle-mêle):
http://forums.dpreview.com/forums/read.asp?forum=1037&messag...