All BROS products including BROS Flip bottle have undergone rigorous testing to endure a long life of good use with proper handling.
Although BROS Flip bottle can be cleaned with dishwasher (with exception to the cap), however to maximize the lifespan of your water bottle, we highly recommend hand washing instead as dishwasher detergents can be abrasive. It is also highly advisable to avoid cleaning your water bottle with hard brushes and cleansers containing bleach, chlorine, or harsh chemical as these could damage the surface of the inner bottle. However, scratches on the outer bottle cause absolutely no harm. Additionally, it is utterly essential to dry and store your water bottle with the cap removed to prevent moisture from being trapped in the water bottle/cap which can lead to growth of mold.
BROS suggests: Replace your water bottle when there are scratches on the inner surface of the bottle or when it becomes cloudy, discoloured or cracked.