I use a pair of these in my very compact camp kitchen. My setup doesn't afford the room for a hard wash basin, so I really like that these fold up and store so conveniently. Even full of dirty dishwater, I never have concerns about carrying these two the nearby sink (if in a campground) or to a greywater tank or to distribute elsewhere - the seams are sturdy, as are the handles. With the four rigid top-edges, this will sit very usefully square when full of water. When carrying, the bottom bows a bit as you'd expect, but I've never had issues with spillage. I've occasionally gotten sloppy and just dumped sharp utensils (including a kitchen knife) into the sink and been pleasantly surprised that there have been no leaks or cuts. Obviously if I worked hard enough, I could puncture the sides, but they're fairly thick - like the material a kid's bounce-house is constructed from.