Available at PursePatterns.com.  This is a fun way to carry your lunch - the Eco-Luncher Bag pattern set!  Instructions are included for using water-proof and insulated materials and this pattern is easy to make.

Sizes are child and adult plus there are instructions for sandwich and snack sized reusable bags.  Full sized pattern pieces are included and the sizes are as follows: Luncher: 9" x 10" x 5 1/2"
Mini-Luncher: 8" x 8" x 4 1/2"
Sandwich Bag: 7" x 7"
Snack Bag: 5 1/2" x 4 1/4"

Materials Needed:

• Main Fabric (oilcloth): LUNCHER- 1/2 yd MINI LUNCHER - 1/3 yd SANDWICH & SNACK BAG - 1/2 yd makes 2 of each bag
• Contrast Fabric: LUNCHER: 1/6 yd MINI LUNCHER: 1/6 yd
• Lining Fabric: LUNCHER - 1/2 yd MINI LUNCHER - 1/3 yd SANDWICH & SNACK BAGS - 1/4 yd makes 2 of each bag
• Fusible or sew-in clear vinyl (17" width) (No necessary if using oilcloth): LUNCHER - 1 1/6 yd MINI LUNCHER - 1 yd
• Insul-Bright, batting or fleece (44" width): LUNCHER - 1/2 yd MINI LUNCHER - 1/3 yd
• Felt: 3" x 3" scrap for both the LUNCHER and MINI LUNCHER
• 7" - 1 1/2" wide Velcro for LUNCHER 7" - 1 1/2" wide Velcro for MINI LUNCHER 24" - 3/4" Velcro makes 2 SANDWICH and SNACK BAGS
• Webbing: 30" - 1" webbing for LUNCHER and 27" - 1" wide webbing for MINI LUNCHER