Using these goggles is easy. First, adjust the silicone head strap to fit your child's head comfortably. Make sure the nose bridge sits well on the nose. Then place the eye cups gently over your child's eyes and press them lightly to create a good suction so water won't get in. When it comes to maintenance, rinse the goggles with clean water after each use to remove chlorine and other pool chemicals. Don't use abrasive materials to clean them as this may damage the coatings. Store them in a dry place when not in use. Please remember that the styles are randomly selected at dispatch. If you have a preference, add a note to your order, but availability is not guaranteed.