Once you fit the collar to your own neck (it should be comfortable, without constricting movement and only tight enough that it is not loose against your skin), it will warm and then disappear. The collar itself is designed to be present at all times and yet invisible. I will expect you to wear it 24/7, including in showers and when sleeping. It will not be negatively affected by anything, nor will it restrain you at all when inactive. In fact, you will not be able to discern its presence at all in this state.