Using these bracelets is easy. Just adjust them to your preferred size between 7 and 13 inches (18 to 33 cm) and wear them comfortably on your wrist. Since they're waterproof, you can wear them while washing your hands or in light rain. But avoid long - term immersion in saltwater or harsh chemicals. To keep them looking good, gently wipe them with a soft, dry cloth after getting wet. Store them in a cool, dry place when not in use to maintain their quality.