Ray Ban 0RB4378 Sunglasses
A Squared Silhouette That Stands the Test of Time
The Ray-Ban 0RB4378 takes the brand's most enduring design instinct -- a softened square silhouette -- and delivers it in a lightweight injected-plastic frame built to last. The rounded corners give it a quietly retro feel without leaning into any single era, making it an easy choice for everyday wear on or off the water.
Frame Construction and Fit
The 0RB4378 frame is crafted from injected plastic, a material Ray-Ban has refined over decades for consistent fit, durability, and color depth. Injected construction holds its shape better than acetate alternatives under heat and repeated wear -- a practical advantage in South Florida sun.
The frame carries a Regular fitting and a High Bridge Fit design, meaning the nose bridge sits higher to accommodate a broader range of face shapes without relying on adjustable nosepads. The result is a secure, comfortable hold that requires no tweaking out of the box.
Lens Dimensions and Proportions
At 46.9mm lens height with a 127mm hinge-to-hinge span and 145mm temples, the 0RB4378 fits a medium face comfortably without overwhelming smaller features. The 54/16mm bridge measurement confirms the High Bridge Fit geometry. These are purpose-sized proportions: enough coverage for sun protection, sized to stay proportional rather than oversized.
Classic Lens Treatment
The 0RB4378 ships with Ray-Ban's Classic lens treatment -- a solid or gradient optical-quality lens that meets Ray-Ban's UV protection standard. Classic lenses are not polarized, which means no reflection-canceling effect, but they deliver the reliable optical clarity and color rendering that Ray-Ban has built its reputation on across eight decades.
Why Ray-Ban, Why the 0RB4378
Ray-Ban is the global benchmark in premium eyewear for a reason: consistent optical quality, genuine UV protection, and frames that outlast trend cycles. The 0RB4378 is not a statement piece -- it is a reliable daily driver in the rounded-square category that pairs with almost anything. Island Water Sports carries it in store and online so you can see the frame in person before committing.
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Specifications
- Model
- Ray-Ban 0RB4378
- Frame Shape
- Square (rounded square)
- Frame Material
- Injected plastic
- Fitting
- Regular
- Bridge and Nosepads
- High Bridge Fit
- Lens Treatment
- Classic
- Hinge to Hinge
- 127mm
- Lens Height
- 46.9mm
- Bridge Width
- 54/16mm
- Temple Length
- 145mm
- Gender
- Women
- Brand
- Ray-Ban
Frequently Asked Questions
- Are the Ray-Ban 0RB4378 sunglasses polarized?
- No. The 0RB4378 uses Ray-Ban's Classic lens treatment, which is not polarized. Classic lenses provide reliable UV protection and optical clarity but do not cancel glare from reflective surfaces the way polarized lenses do. If polarized lenses are a priority, Ray-Ban offers separate polarized models.
- What is a High Bridge Fit and will it work for my face?
- High Bridge Fit is Ray-Ban's designation for frames engineered with a taller nose bridge, designed to sit comfortably on faces with a higher nose bridge without sliding down or pinching. It typically works well for a broader range of face shapes and eliminates the need for adjustable nosepads.
- What does the Classic lens treatment mean on Ray-Ban sunglasses?
- Classic is Ray-Ban's standard lens treatment -- a conventionally tinted lens (solid or gradient) without polarization, mirroring, or photochromic properties. It delivers consistent color rendering and UV protection in a clean, timeless look.
- Is injected plastic a durable frame material?
- Yes. Injected (or injection-molded) plastic is a manufacturing process that produces consistent, dense frames with uniform color throughout the material. Ray-Ban has used injected frames for decades because they hold their shape reliably under heat and daily use -- both relevant considerations in a South Florida environment.
- Can I buy the Ray-Ban 0RB4378 in store at Island Water Sports?
- Yes. Island Water Sports carries Ray-Ban sunglasses both in store and online. Visiting in store lets you try the fit of the High Bridge design and see the lens treatment in natural light before purchasing.
- What face shape does the 0RB4378 rounded-square frame suit?
- The softened square silhouette of the 0RB4378 is versatile across most face shapes. The rounded corners reduce the severity of a strict square frame, making it more flattering on oval, round, and heart-shaped faces, while still providing the structured look that complements angular features.
- What UV protection do the Ray-Ban 0RB4378 lenses provide?
- Ray-Ban Classic lenses provide 100% UV protection (UV400), blocking both UVA and UVB radiation. This is the standard across Ray-Ban's sunglass lineup regardless of lens treatment or tint.