Using your 4Ocean deep sea beaded bracelet is easy. Just adjust it to fit your wrist comfortably, as it can be adjusted from 7 to 13 inches (18 to 33 cm). It's waterproof, so you can wear it while swimming or washing your hands. To make the glow-in-the-dark cord shine, expose it to UV/blacklight for an hour. Sunlight works too, but it might take longer. When it comes to maintenance, simply wipe it with a soft cloth if it gets dirty. Since it's made of recycled materials, handle it with care to ensure its long - lasting use. And enjoy knowing that your purchase supports a sustainable and plastic - free shipping process.