Ray-Ban RB4378 6018G — Black / Grey gradient

Black injected construction with Grey gradient lenses define the Ray-Ban RB4378 6018G, a sunglass from Ray-Ban's current best-selling lineup.

Finished in Black, this colorway gives the RB4378 silhouette its own character.

The Grey gradient lenses complete the look, balancing sun protection with the frame's color story.

Black

The 6018G Black colorway pairs the RB4378 frame with a distinctive finish.

Built in injected, the frame offers the durability and feel Ray-Ban is known for.

The Original Sunglass Brand

Ray-Ban was founded in 1937, born from a U.S. Army Air Corps request for glare-cutting lenses for pilots — the origin of the Aviator. The Wayfarer followed in 1952 and became one of the most recognizable frame shapes ever made. Few brands own sunglass history the way Ray-Ban does.

Timeless Shapes, Honest Build

Ray-Ban's best sellers endure because the shapes are resolved and the construction is straightforward. These are sunglasses designed to be worn daily for years — classic proportions, reliable hinges, and lenses in the brand's signature green, grey, and brown families.

Gradient Lens Finish

A gradient lens treatment keeps the upper portion darker for overhead sun while allowing more light through the lower portion — practical for driving and variable light.

Square Shape

A square front gives strong definition and a bold, graphic read — structured lines that anchor the face.

High Bridge Fit

The RB4378 is built with high bridge fit for a more secure, comfortable position on the face.

Why We Love This Color

Black sits confidently in the RB4378 lineup — pairing black framing with grey gradient lenses for a look that works across the wardrobe.

Prescription Options

The RB4378 can be customized with prescription sunglass lenses to meet your prescription needs.

At Deziner Eyecare, ask about premium prescription sun lenses, customized grey and fashion tints, polarized options, and advanced anti-reflective treatments.

Product Details

Brand: Ray-Ban
Model: RB4378
Color Code: 6018G
Frame Color: Black
Lens Color: Grey gradient
Frame Material: Injected
Lens Material: Polycarbonate
Lens Technology: Gradient
Frame Shape: Square
Frame Type: Full Rim
Fit: High Bridge Fit
Gender: Women's
Prescription Compatible: Depending on prescription
Lens Width: 54 mm
Bridge Width: 16 mm
Temple Length: 145 mm
Lens Height: 47 mm
Size: 54-16-145 mm

The Look

Black / Grey gradient. Ray-Ban design.

The Ray-Ban RB4378 6018G pairs black framing with Grey gradient lenses — a best-selling Ray-Ban sunglass, ready to wear.