There are many choices for sunglasses frame materials, each of which has its own unique characteristics and applicable scenarios. The following are some common sunglasses frame materials and their characteristics:

Plate material:
Features: Sunglass frames made of plate material are mid-to-high-end frames with many excellent qualities. It is light in weight, delicate, smooth and comfortable to the touch, and suitable for people who are prone to allergies. Plate frames are rich in color, have a strong sense of hierarchy, and are simple and generous in design, suitable for all kinds of clothing.
Advantages: The texture is moist and transparent, the color is not easy to fade, nor is it easy to age, and the chemical properties are stable.
Disadvantages: The impact resistance is relatively poor and the workmanship is complicated.

TR90 memory frame:
Features: Sunglass frames made of TR90 material are mainly used for sports sunglasses. It has good impact resistance, is very light, has good elasticity, is not easy to break, has good texture and gloss, and has bright colors.
Advantages: Good allergy resistance, comfortable skin contact, and belongs to mid-to-high-end frames.

Metal frame:
Features: The metal frames used to make sunglasses are generally alloys, such as aluminum-magnesium alloy, high-nickel alloy, nickel alloy, stainless steel, etc.
Advantages: Not easy to break, good impact resistance, not easy to deform.
Disadvantages: Relatively heavy, some are easy to oxidize, and not suitable for people who are allergic to metals.

Titanium frame:
Features: Titanium frame is a high-end frame material for sunglasses, with the characteristics of lightness, firmness, anti-oxidation, and corrosion resistance.
Advantages: Comfortable to wear, not easy to be allergic, strong corrosion resistance and impact resistance.
Disadvantages: Relatively high price.

Composite material frame:
Features: A kind of sunglass frame material that has appeared in recent years, mainly made of carbon fiber, glass fiber, etc.
Made of composite materials.
Advantages: Lightweight, flexible, strong, high strength, widely used as frame material for sports glasses.

Plastic frame:
Types: Mainly AC, PC and other materials. AC material has low cost but is fragile; PC material has high strength, light weight, good drop resistance but relatively high price.