Which frame material is known for its light weight and flexibility?

Plastic frame materials are recognized for their lightweight and flexible characteristics, making them a popular choice in eyewear. The flexibility of plastic allows for a comfortable fit, which can easily conform to the shape of the wearer's face. Additionally, plastic frames tend to be resilient against impacts and stresses, which further enhances their durability while still remaining lightweight. This combination of qualities makes plastic an ideal material for designing frames that provide comfort and ease of wear throughout the day.