Perfect size tin to store your Solid Shampoo. When one shampoo runs out (which wont be for a long time) simply wash tin out and replace with the new bar.
Friends don't let friends keep their Shampoo Bar in tins permanently. You're The Bomb recommends you let your shampoo bar dry on inside of lid before putting back in the tin after each use. This will increase the longevity of your Shampoo bar.