Zhana 57 Sunglasses

CR-39 lenses are a lightweight plastic material known for their excellent optical clarity and scratch resistance. They also provide UV protection, making them a popular choice for sunglasses. Choosing CR-39 lenses means you’ll enjoy comfortable, clear vision while protecting your eyes from harmful UV rays.

The base curve refers to the curvature of the lens, which can significantly impact both the fit and the field of vision. A lens with a base curve of 4, for example, is designed to provide a wider view and better contour to your face. This means not only do they look stylish, but they also enhance your overall visual experience and sun protection.

Beta-titanium is a lightweight and flexible titanium alloy used in the frames of sunglasses. Its strength and durability make it ideal for eyewear, ensuring that your sunglasses can withstand daily wear and tear while remaining comfortable. This means you can enjoy stylish, long-lasting frames without the bulk.

UVA and UVB protection is crucial because these ultraviolet rays can cause serious damage to your eyes and skin. UVA rays contribute to skin aging and can increase the risk of skin cancer, while UVB rays can cause sunburn. Sunglasses with 100% UVA/UVB protection help shield your eyes from these harmful effects, ensuring your long-term eye health.

The polishing cloth included with your sunglasses is designed to clean the lenses without scratching them. To use it, simply wipe the lenses gently in a circular motion to remove smudges, dirt, and fingerprints. Regularly cleaning your lenses with the polishing cloth will help maintain clear vision and keep your sunglasses looking new.

Yes! CR-39 lenses are lightweight and designed for comfort, making them suitable for extended wear. Their optical clarity and scratch resistance also mean you can enjoy clear vision without the worry of discomfort or damage, allowing you to wear your sunglasses all day long.