lunch bag tutorial/pattern?

Can anyone suggest a good tutorial/pattern for a lunch bag that has a drawstring section where you can tuck back inside(hope this makes sense) the bag and use the handles for carrying?  Thanks!

Hi!!!
I've find those tutorial and maybe could be useful for you. You can make the lininig in oilcloth in order to clean it easily.

http://blissfulbyquenna.blogspot.com/2008/09/tutorial-zippered-top-lunch-bags.html
http://www.flickr.com/photos/bramblestitches/sets/72157600300181429/

Hope it works! 

Sorry for my english!

I think this tutorial might be just what you want!  It's on my list of things to make and is SO cute.  I made a different bag from another tutorial on this site and it was very easy to follow.  This tutorial is for using a vintage pillow case but you can use other material too - it has a drawstring closure.

http://www.ohfransson.com/oh_fransson/2008/03/vintage-pillowc.html

I hope the link works - I haven't tried to put one in here before!

I am trying to find a good tutorial on sewing a reusable sandwich bag- any ideas???  Thanks