Insulated Easy Zip Lock Resealable Aluminum Sandwich Bag - Reusable Thermal Lunch Snack Bento Picnic Hot & Cold Pouch (5pcs, Small - 9.8 x 13.5 Inch)

I ordered these to put my lunch and an ice pack in to take to work - this way I don’t need a bulky lunch bag or have to carry multiple bags with me. It fits inside my tote / laptop bag - and the bonus is that it keeps everything completely dry / condensation free. You can use them multiple times and unlike a regular lunch bag if you happen to loose it at school or the office it is no big deal since they so cheap.