I looked into them some more and found the website for Planetbox. Although they are a bit pricey ($40-60+ depending on what add-on's you get) I can see the savings financially in purchasing them:
Their website says:
Why does your product cost what it does?Most of us are used to the low cost of buying things made out of plastic and designed to be used and thrown away fairly quickly. Our product is different. We use a high quality, expensive material, and our products are intricately engineered to function well over time. All this costs more than the throw away items we are too used to consuming. We realize that this is a significant investment for many families As you know, this is something that you and your child can use every weekday for years to come. It is a high quality product that is not cheap to produce. Our sincere hope is that people will find the investment was worth it for their family.I plan to look into other lunch kits similar to this and see what is out there first...
Even though PlanetBox might cost more up front, will it save me money in the long term?Yes! By replacing wasteful, single use plastic and paper containers, you will save money over the lifetime of the product. Also, your PlanetBox allows you to buy food in bulk, which is cheaper and less wasteful than single use containers. For example, a 1 oz prepackaged bag of cheesy crackers costs 87 cents, but 1 oz of those exact same crackers taken from a 12 oz box costs 43 cents – half as much!
Still, thist is absolutely something I would like to get for my daughter's lunches (and mine too!)
Here is their website if you want to check it out:
Here are some more photos from the website: