Using these sunglasses is super easy. Just put them on your child's face, and the flexible arms with spring hinges will adjust to fit their face comfortably. When not in use, keep them in the included storage bag to prevent scratches. Avoid leaving them in hot places like a car dashboard, as high temperatures may damage the frames or lenses. To clean the sunglasses, use a soft, damp cloth. Gently wipe the lenses and frames to keep them looking great and functioning well. Always check the hinges regularly to make sure they're working properly and the arms are still flexible.