Each chamber seals on its own thread and the pump locks flush with the cap. There's nothing sticking out to catch on a zip and pop open.

Around a week of daily use. Plenty for a short trip or for the gym without refilling.

No. Open the base and pour in, or squeeze straight from your full-size bottle. Two minutes for all four.

Shampoo, conditioner, body wash, moisturiser, toner, sunscreen, light creams. Thick products like body butter or clay masks won't pump properly.

Over 20 waterproof labels are included, and the clear window shows the level in each chamber.

Yes — that's what it's built for. Rinse, dry, refill as often as you like.

US tracked delivery, with a tracking link as soon as it ships.