I tried this myself on a busy Saturday morning. I usually take protein along when my blood sugar bottoms out. I also included a small can of V-8 juice, small container of carrots and a couple of single serving string cheese. With the cold packs, I admit it was a tight fit, but my goodies stayed cool and fresh when I needed them.  (See full article on www..bellaonline.com/articles/art62781.asp)