Promotion Double Bridge Plastic Sunglasses

Promotion Double Bridge Plastic Sunglasses

You should always buy sunglasses with this feature. Long-term exposure to ultraviolet (UV) radiation in sunlight is associated with cataracts and eye growth, including cancer. UVB radiation is considered to be more dangerous to the eyes and skin than UVA radiation. Both plastic and glass lenses absorb some of the UV light, but UV absorption can be improved by adding chemicals to the lens material or using special lens coatings during the manufacturing process. Impact resistance All sunglasses must meet the impact standards set by the Federal Food and Drug Administration (FDA) for safety reasons. No lens is truly unbreakable, but plastic lenses are less likely to break when hit by a ball or stone than glass lenses. Most over-the-counter sunglasses lenses are made of plastic. Polycarbonate plastic sunglasses, used in many sports, are particularly tough, but they are easily scratched. If you are buying a polycarbonate lens, look for a lens with a scratch-resistant coating.

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Description

Both plastic and glass lenses absorb some of the UV light, but UV absorption can be improved by adding chemicals to the lens material or using special lens coatings during the manufacturing process.

Impact resistance

All sunglasses must meet the impact standards set by the Federal Food and Drug Administration (FDA) for safety reasons. No lens is truly unbreakable, but plastic lenses are less likely to break when hit by a ball or stone than glass lenses. Most over-the-counter sunglasses lenses are made of plastic. Polycarbonate plastic sunglasses, used in many sports, are particularly tough, but they are easily scratched. If you are buying a polycarbonate lens, look for a lens with a scratch-resistant coating.

Model#:	WP1047
Item Type:	Promotion Sunglasses
Frame Material:	PC and Metal
Lens Material:	PC
Age	Adult
ODM/OEM service:	Yes
MOQ:	300pcs
Certificate:	FDA, CE