Almost everything 3d printed is made out of PLA which is a great material, but has some quirks. PLA has a softening temperature of around 60c (140f) but has relatively poor UV resistance. Almost everything 3d printed will last for years, if you don't leave it out in the sun on a hot day. I have left a backpack full of boxes and wheels in my truck in 90+ degree heat with literally no issues, but if they were on my dashboard and directly exposed to sunlight, I would have had a terrible situation on my hand. Basically an easy way to say this is, dont leave one of the deck boxes on your dashboard in the middle of summer, which why would you even do that? your cards are expensive, don't leave expensive stuff in your car. PLA is an amazing material, with near zero downsides, but I would feel like a jerk if I didn't inform people about this aspect of it. In terms of actual durability of the box, I have dropped a couple of these boxes and none of them have broken, the bottom tray tends to fall off, but other then that everything within the box has survived with zero damage. I wouldn't provide this product if I didn't believe that it would actually protect your cards.
The carrying case
A stacking carrying case that will allow you to take any number of decks you may want around with you
MORE WHEELS
Wheels in development:
1. Food
2. Tapped
3. Loyalty
4. Charge
5. Slime