The weight of the liquid does not firmly attach the pouch allows a suction cup and the shape of the hook is not large enough to possibly be hung on the bathtub faucet and the first use I spilled half my preparation. For the rest I have no sign of leakage but I was surprised by the low flow (after one hour, the volume had barely dropped a liter). Otherwise for the price I intend to use it regularly but I will invest in a beer next time even if it takes more space.