Children and adolescents are in the growth and development period. When choosing children's frames, health, comfort and safety are the main considerations. The selected glasses should conform to the physical characteristics of children and adolescents, with good quality, light material, appropriate size, good optical performance and high safety. It is best to use high-quality metal or mixed materials for the frame material, which is not afraid of sweat, is light in weight, does not cause skin allergies, is not easy to produce fatigue, and is not easy to break.