Zip top bag lined. This is technically a lunch bag pattern, but it could be just any generic zip top tote bag.
Let's Sew! - It's In The Bag
Free Bag Pattern and Tutorial - Lunch Bag
Bags to Sew! Sewing Patterns and Tutorials
DIY Lunch bag Tutorial This is an adorable lunch bag. took me about 2 hours. Tute is good although I wish there was a cut list at the start
A multi-style sewing pattern by Sew Sweetness for this set of insulated lunch bags. Suitable for both children & adults, they are the right size to fit a sandwich, snacks, and a drink.
Totes and Purses Handmade
Easy Peasy PUL-lined Lunch Bag, from: http://roseleej.blogspot.co.uk/2012/06/easy-peasy-pul-lined-lunch-bag.html
bags, purses & co
Make your own insulated lunch bags with your favorite fabrics. Includes make your own laminated fabrics for a wipe-clean option too.
Bags, purses and totes patterns
DIY - Reusable Oilcloth Lunch Bag. Step-by-Step Tutorial. Also see this Pin for furher instruction: http://pinterest.com/pin/263601384409265222/
DIY - General Crafting
Insulated Lunch Bag Pattern, Lunch Bag Tutorial, Tote Bag PDF Sewing Pattern
Tassen om te naaien
Zaaberry: Insulated Lunch Tote Tutorial