Using this cross belt is a breeze. First, fill the 400ml bottle with your favorite drink. Then, adjust the belt around your waist for a snug fit. As you move, you can easily reach for the bottle whenever you need a sip. When it comes to cleaning, simply wipe the belt with a damp cloth and wash the bottle with mild soap and water. Make sure to dry them thoroughly before storing. Don't overfill the bottle to avoid spills. Also, keep the belt away from sharp objects to prevent damage.