There are several materials that can are used for spectacle frames, and the best choice for you will depend on your individual needs and preferences. Here are some common materials used for spectacle frames and some of their characteristics:
Plastic: Plastic frames are lightweight, affordable, and come in a wide range of colors and styles. They may not be as durable as some other materials, however, and may not be suitable for people who are hard on their eyewear.
Metal: Metal frames, such as titanium and stainless steel, are strong, durable, and hypoallergenic. They can be more expensive than plastic frames, but they may be worth the investment if you have a tendency to break or damage your eyewear.
Acetate: Acetate is a type of plastic made from plant-based materials, such as cotton and wood pulp. It is lightweight, flexible, and available in a wide range of colors and patterns. Acetate frames may be more expensive than some other materials, but they are also highly durable and resistant to fading and discoloration.
TR-90: TR-90 is a type of plastic that is extremely lightweight and flexible, making it very comfortable to wear. It is also hypoallergenic and resistant to fading and discoloration. TR-90 frames may be more expensive than some other materials, but they are also very durable and can withstand a lot of wear and tear.
Ultimately, the best material for spectacle frames will depend on your personal preferences and needs. It's a good idea to try on frames made from different materials to see which feels the most comfortable and suitable for you.