By taking care of your PlanetBox products, you can expect years of dependable service. 3rd Stone Design warrants PlanetBox stainless steel products to be free from defects in material or workmanship for a period of 5 years from the date of original purchase, and other PlanetBox products (Carry Bags, Magnets, Satellite Dish, BottleRocket plastic cap and spout parts) to be free from defects in material or workmanship for a period of 1 year from the date of original purchase. ColdKits are warranted against manufacturer defect within the first 15 days of use. Any problem that is caused by abuse or negligence is not covered. Normal wear and color fading/scratching are not covered. Scuffing, scratching, staining, and small tears are considered normal wear and are not grounds for a warranty replacement. Breakage that results from dropping the Satellite Dish or the BottleRocket Water Bottle is not grounds for a warranty replacement. 3rd Stone Design’s sole obligation under this warranty and any implied warranty is limited to the repair or replacement, at 3rd Stone Design’s option, of any component that fails to conform to this warranty.

Items purchased from businesses other than or PlanetBox’s Seller Website on are subject to a new warranty program and are no longer to contact the retailer that they purchased from (being my company).  I have been instructed to advise all customers to contact PlanetBox directly at –  They no longer honour warranty replacements through their network of retailers so I am unable to assist you in this matter.  I would, however, recommend that you include photos of your Rover with the explanation in order to ensure that they understand your complaint.


1. Do PlanetBox items ever go on sale?

Of course, but we do not have any scheduled sales. Usually “back to school” and Christmas are the go-to sales but other than that… HOWEVER, we offer quantity discounts and specifically urge “mommy groups” or school fundraising advocates to consider getting together to place orders. Please contact us for large volume discounts.

PLEASE NOTE:  These group discounts cannot be combined with any other offer or discount.

2. Do you have any food packaging ideas for my PlanetBox?

Check out the PlanetBox cook book for sale on our site.

3.  Dipper Seals:

Take your empty dipper lid, and put it upside down. Then place the dipper seal on top of the groove for the seal. Then take your empty dipper cup and place it upside down, on top of the lid, and squeeze. This should push the dipper seal into place on the lid. Flip the dipper right side up now, and remove the bottom cup. Now your seal should stay in place inside the lid.

4.  Raised Edge of Hinge:

“It is normal for there to be a space at the back (hinge) of your PlanetBox.  In fact, it is an intentional part of the design, to allow for flexing and sealing of the dippers.  The back of the PlanetBox does not need to be flush with the hinge.  The space can be a little more or a little less than what is shown on this picture attached – the variable amount of space will not affect the functioning of the lunchbox.”

PlanetBox – Space in back of lunchbox

5.  Zipper Pull:

Below are the instructions for how to replace your ‘Silicone Zipper Pulls’ with the new ‘Zipper Loops with Pull’.   Attached is a pdf file that includes step by step photos, along with the instructions.

Tools Needed – You will need 1 needle nose pliers and the replacement zipper loop with pull.

Step 1:  Insert the Pliers into opening of the Zipper Head.
Step 2:  Rotate the Pliers to open the back of the Zipper Head slightly.
Step 3:  Make sure the opening of the Zipper Head will allow the Zipper Loop with Pull to slide on.
Step 4: Slide the Zipper Loop with Pull onto the Zipper Head.
Step 5: Apply pressure to the opening of the Zipper head to secure the Zipper Loop with Pull in place.
Step 6: Zip and Unzip the zipper to make sure the Zipper Loop with Pull is attached securely.


6.  Rust:

We understand that you want your PlanetBox to look shiny and spot free, so we’d like to explain where spots can come from, why they are harmless, and how you can remove them.

Some background: On rare occasion we have heard from customers that their PlanetBox is ‘rusting’. They say that what appears on the surface of the lunchbox – usually on the top lid – is rust and it does not wash off. We have replaced a number of these lunchboxes now and in all cases what is present may indeed be rust – but it is not the rusting of the actual lunchbox which is to blame. PlanetBox is made from high grade stainless steel. This type of material is highly resistant to oxidization (rusting) of the base steel by virtue of the inclusion of other metals, namely Chromium and Nickel.  The alloyed metals serve to resist the degradation of the iron in the steel that can come with exposure to atmosphere and in particular, water.

Where do spots come from:  If there is a spot on your PlanetBox, it is most likely due to either:

1) A mark left behind from the electro polishing process, which smooths the surface of the metal and makes it shiny.
2) Detergents that contain chlorine bleach.  Bleach causes pitting and “eats away” at stainless, and should never be used to clean our products.  Common detergents that can contain bleach include many “Cascade” dishwashing products, as well as other brands.
3) Hard water can leave dark spots and stains on your stainless.
4) Magnetic material left from the magnets on top of the PlanetBox, especially if the magnets are accidentally left on during washing.
5) Foreign material can attach itself to the lid of the lunchbox and then can proceed to corrode in place. This likely happens when customers wash their PlanetBox with other carbon steel items in their dishwasher or sink. Sharp kitchen knives are a potential culprit, as are rusty baking pans. These little flecks of iron or other contaminants attach themselves to the lid of the lunchbox.  After these bits of foreign debris attach themselves to the lid they proceed to rust. If these are left unattended for a very long time they can begin to ‘pit’ the lid of the lunchbox, making very tiny divots in the surface.

Why spots are harmless:

Rust is iron oxide, and ingesting a small amount of iron is not harmful—it may even be helpful, as the body needs iron.  Many people use cast iron cooking pans in order to add iron to their diet.

How you can remove spots:

The good news is that spots can usually be removed easily.

Corrosion Spots:  Corrosion spots can be easily cleaned up with either some super fine steel wool and a little elbow grease, or a paste of baking soda and vinegar.

Fine Steel Wool: Start by washing your PlanetBox very well under running water. Then take some Super Fine Steel Wool (#000 is one such ranking) and start by lightly buffing the spotted area. Often times it just takes a few strokes under light pressure to remove the spots. If that doesn’t do it, then proceed to work the surface harder with the steel wool pad. This may cause very minor scratches to the surface of the lunchbox, but the tradeoff is that it will almost always remove the offending spots – with no damage to your lunchbox. Rinse with running water as you are going and within no time you’ll have a shiny new PlanetBox to use and enjoy for years more to come.

Baking Soda and Vinegar:   Make a thick paste of baking soda and vinegar, and leave on for at least an hour.   Try scrubbing it with a sponge and/or some fine steel wool.  Rinse and dry.

Hard Water Spots:  Hard water has a high mineral content. If it is used to wash stainless steel, then left to set, the water will evaporate and leave behind minerals, such as limestone, which can appear as white spots. To avoid hard water stains, always rinse your PlanetBox after washing, and immediately dry using a clean, dry cloth. To remove hard water stains you can try placing a vinegar-soaked rag over spots for a short period of time, and rinsing and drying promptly.  If you are using a dishwasher, place 3 cups of vinegar in first wash cycle and repeat for the next several washes.   This should remove the spots.


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