Packing it without a leak
The single habit that prevents a leak is packing it empty and refilling once you arrive. Everything else — the seal, the case, the waterproofing — is there to hold up the rest of the way.
Travel empty, refill on arrival
A 250 mL reservoir is enough for one full clean, which means it's also small enough to skip travelling with any water in it at all. Empty it before you pack, and refill once you're through security or at your destination — from a bathroom tap, a water fountain, or straight from a bottle using the universal adapter.
This one habit does more to prevent a leak than any bag, case, or wrapping could. An empty device has nothing to leak.
What the tight-lock seal is actually for
The seal that closes the reservoir is built to stay shut through normal handling — being tossed in a bag, sat on top of other items, or squeezed under other packing — not just to hold water in while it's sitting still on a counter at home. That's the difference between a seal meant for storage and one meant for travel.
It works alongside the IPX6 body rating, though those two things do different jobs: the seal keeps water in (or out) of the reservoir; the waterproofing protects the device itself from splashes and jets while it's in use. Packing dry mostly relies on the seal, not the waterproof rating.
Questions people actually ask
Do I need to empty it before I pack it?
Yes. Travel with the reservoir empty and dry, then refill at your destination — a tap, a fountain, or a bottle past airport security all work. An empty device can't leak, and it's also lighter and takes up less room in the bag.
Where's the safest place to pack it?
Anywhere in the carrying case it comes with — that's what the case is for. Inside a toiletry bag alongside anything else that might spill is fine too, since the seal is designed to hold closed under normal handling and pressure changes, not just sit passively next to other items.
What does IPX6 actually protect against here?
IPX6 means the body resists water jets from any direction, which is the same rating that protects it during use. It is not rated for submersion. For packing, the relevant part isn't the IPX6 rating at all — it's the tight-lock seal that keeps water from working its way out while it's empty and stored.