Using your Sea to Summit Detour Collapsible Mug is a breeze. Simply expand it to its full 475ml capacity and fill it with your favorite hot or cold beverage. The Cool-Grip fins on the side walls will keep your hands comfortable, no matter the temperature of the drink. When you're done, collapse it down to just 31mm tall for easy storage. For cleaning, you can wash it with mild dish soap and warm water. Avoid using abrasive cleaners that could damage the silicone or steel. And remember, this mug comes with a lifetime guarantee, so you can enjoy it worry-free for years to come.