I used them both in a washing machine and to hand-wash some items on my trip, and in both cases ... This'll be great in case you get motion sick in a budget-friendlier car, bus, or ferry ride.
With these laundry soap sheets I was able to wash my clothes in the sink — letting me pack just the right amount of ... I've worn it as PJs, on a plane with a blazer, and for a nine-hour car trip.