Our cases are not waterproof! If your device is submerged in water, your Mous case will be not be able to save it.
However there is a degree of water-resistance. If you splash water on your case, you should wipe it dry as quickly as possible, and the material should not be too affected by it. We would also recommend carefully removing your device to wipe inside the case, in the event that any water has entered the case through the button or charging port cut-outs.