Robust, splash-proof, compact outdoor container

Why I Like It

The best outdoor containers are the ones you forget you’re carrying until you need them — and this one qualifies. It’s compact enough to disappear into a pouch or pocket, but the splash-proof seal is genuinely functional. The lid design creates a friction-and-geometry seal that keeps contents dry through rain and immersion without requiring an O-ring or any hardware.

What you put in it depends on your kit philosophy. Pills, medication, a few folded bills, a folded piece of paper with emergency contacts, SIM cards, a USB-A drive, matches with a striker strip, a folded note — the form factor accommodates all of it. For field medical, a few bandages and alcohol wipes pack down to fit. Some people run them as lens covers or battery carriers. The size lends itself to any small, moisture-sensitive cargo.

Print settings are where watertightness is made or broken. 4 perimeter walls minimum, 0% infill is actually fine (solid walls carry the load), and PETG over PLA — PETG’s slight flexibility helps the lid seat and seal without cracking. If you’re using this in alpine or cold environments, ASA handles temperature cycling better. Slow your perimeter speed to 25–30mm/s for the top and bottom layers to get the cleanest seam. A small amount of silicone grease on the lid rim improves the seal further.

What Filament Should You Use?

Here’s a quick breakdown of the three most common filaments for EDC gear so you can pick the right one for your setup:

TL;DR: Use PETG for most EDC prints — easy to work with and tough enough. Use ASA if the piece will live outdoors or in direct sunlight. Use ABS if you need maximum rigidity and heat resistance and have an enclosure on your printer.