This kind of bags were very popular in the 80's. Someone must have decided they'd better come back. Their main characteristic is the draw string fastening at the top of the bag.
And it seems this trend has already hit the streets .
Dior Cannage Bag
Kate Moss, Glastonbury 2005
She even included a similar bag in her collection for TopShop
Finally Irina Lazareanu, carrying my favourite.
Credit to: style.com, thefashionspot.