TOM BIHN Deluxe Spiff Kit, Big Toiletries Kit, 3.7L, 9.5" x 8" x 2.5"

The hanging hook is genuinely sturdy, and the way it folds flat when empty makes it easy to tuck into a carry-on. It holds more than it looks like it should, which is exactly what I needed for a weeklong trip.

The clamshell design is a game-changer—it lays totally flat so I can see everything at once instead of digging through a dark sack. Fits a surprising amount for its slim 2.5-inch depth, and the hook means I can hang it off a towel bar without it folding in on itself.

The hook on the back is perfect for hotel shower rods, and the whole thing unfolds flat so nothing gets buried at the bottom. I fit a week’s worth of toiletries in the 3.7L size without any overstuffing, and the hanging loop held steady on a towel bar the entire trip.