Using this Loungefly Across the Spider - Verse Lenticular Mini Backpack is super easy. Just adjust the shoulder straps to your comfort and sling it on. It's great for carrying your daily essentials like your phone, wallet, and keys. When you're in a well - lit area, tilt the bag to see the amazing lenticular effect of Spider - Gwen. As for the glow - in - the - dark feature, expose it to light for a while before going into a dark place. For maintenance, use a soft, damp cloth to clean the vegan leather. Avoid using harsh chemicals as they might damage the material. Keep it away from sharp objects to prevent scratches on the bag. And remember, this is an officially licensed product, so take good care of it to enjoy it for a long time.