Marc Jacobs Rectangular Sunglasses - Havana

It means the lenses block all harmful ultraviolet (UVA and UVB) rays from the sun, protecting your eyes from potential damage.

The dimensions are 55mm for the lens width, 17mm for the bridge width, and 140mm for the temple length.

The sunglasses are made from acetate, a durable and lightweight plastic.

This refers to a lens where the tint is darkest at the top and gradually gets lighter towards the bottom, often with a darker tint in the middle as well, providing varied light filtration across the lens.

While they offer good UV protection and a secure fit for general use, they are primarily fashion sunglasses. For intense sports, consider specialized performance eyewear designed for impact resistance and stability.

Always use a clean microfiber cloth. If necessary, rinse the lenses first under cool water to remove dust, then gently wipe dry with the cloth. Never use paper towels or rough fabrics, as they can scratch the lenses.

The rectangular shape is generally flattering on many face shapes. However, individual fit can vary, so checking the specific measurements (55-17-140 mm) against your own facial features is recommended for the best comfort.

Adjustments can sometimes be made by a professional optician. For minor tightness, gently bending the temples might help; for looseness, ensure the screws are tight. If significant adjustment is needed, consult a professional.

Rinse the lenses under cool water to remove any loose particles. Then, use a soft microfiber cloth to gently wipe them clean. For tougher grime, a mild soap and water solution followed by rinsing and drying with a microfiber cloth is recommended.

Acetate frames can be sensitive to heat. If warped, try to store them in a cool place. For minor warping, a professional optician may be able to carefully adjust the frame. Avoid attempting to bend them forcefully yourself, as this can cause breakage.