Ray Ban RB4331 Sunglasses
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Ray-Ban RB4331 Square Sunglasses
The Ray-Ban RB4331 delivers the clean geometry and optical quality that have made Ray-Ban the global leader in premium eyewear. The square silhouette sits confidently on a wide range of face shapes, making it one of the most versatile frames in the lineup. Gradient lenses cut glare at the top of the lens where sky light is most intense while keeping the lower field clear, so the frame pulls double duty from the water to a rooftop bar.
Frame Construction and Comfort
Ray-Ban engineers the RB4331 frame in lightweight injected nylon, a material that absorbs impact, resists salt air and sunscreen residue, and holds its shape through the heat of a South Florida summer. The temples flex at the hinge points to conform to different head widths without losing their grip over a long day on the water or the beach. Nose pads are integrated into the bridge for a stable, slip-resistant fit even when you are sweating through a paddle session.
Lens Optical Quality
Ray-Ban lenses in the RB4331 are optically correct to Ray-Ban's standard, meaning no warping of peripheral vision that causes eye fatigue on extended wears. The gradient treatment reduces brightness at the top zone where reflected light off the water hits hardest, while the lower portion stays relatively open so you can read instruments, charts, or your phone without pulling the frame down. Lenses meet UV400 protection standards, blocking 100% of UVA and UVB radiation.
If you are searching for Ray-Ban RB4331 polarized lenses: the RB4331 is available in non-polarized gradient configurations. Ray-Ban also sells replacement lenses separately through authorized channels if you want to upgrade the optical treatment down the line.
Fit and Sizing
The RB4331 is sized for a medium-to-large fit, with the square lens shape providing generous coverage without extending into oversized territory. The frame sits close to the face to block wind-driven glare from the sides, an important feature for anyone spending time on the water or riding a bike along the coast. Check the variant picker for the options currently in stock at Island Water Sports.
Why Buy at Island Water Sports
Island Water Sports has carried Ray-Ban since the brand became the standard for surf-and-sun eyewear in South Florida. Our staff wear and test what we sell, so we can point you to the right frame for your face shape and use case, whether you are shopping in store or online. Ray-Ban is backed by the manufacturer warranty, and our team can help you navigate any service questions after your purchase.
Care and Maintenance
Rinse the RB4331 with fresh water after salt exposure. Clean lenses with the included microfiber cloth using small circular strokes, lens-first, to avoid transferring frame oils onto the optical surface. Store in the included hard case when not in use. Avoid leaving the frame on a car dashboard in direct sun, as prolonged extreme heat can affect the frame's spring tension over time.
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Specifications
- Brand
- Ray-Ban
- Model
- RB4331
- Frame Style
- Square
- Lens Type
- Gradient
- UV Protection
- UV400 (100% UVA and UVB)
- Frame Material
- Injected nylon
- Gender
- Men's
- MPN
- itemMatrix-19171
Frequently Asked Questions
- Are the Ray-Ban RB4331 sunglasses polarized?
- The RB4331 variants sold at Island Water Sports feature gradient lenses rather than polarized lenses. Polarized and non-polarized gradient options are available across the broader Ray-Ban lineup. Check the variant picker for the current lens configurations in stock.
- Can I get replacement lenses for the Ray-Ban RB4331?
- Yes. Ray-Ban offers replacement lenses for many of its frames, including the RB4331, through authorized dealers and the Ray-Ban website. Bring the frame into Island Water Sports and our team can help you identify the correct replacement lens SKU.
- What is the difference between the RB4331 and the RB4331F?
- The RB4331F is an Asian Fit variant of the same frame with a lower nose bridge and slightly different temple geometry for a better fit on flatter nose bridge profiles. The standard RB4331 is designed for a higher nose bridge. The frame shape and lens are otherwise identical.
- What does UV400 protection mean on the Ray-Ban RB4331?
- UV400 means the lenses block all light rays with wavelengths up to 400 nanometers, covering the full UVA and UVB spectrum. All Ray-Ban lenses meet this standard, providing complete protection against the UV radiation that causes cataracts and long-term retinal damage.
- Is the Ray-Ban RB4331 good for water sports and beach use?
- The RB4331 is a lifestyle square frame suited for beach and casual outdoor use. The injected nylon construction resists salt air and humidity well. For active water sports where submersion or high-impact activity is expected, a wrap-style sport sunglass with a polarized lens may offer a more secure fit. The RB4331 excels as a daily wear and beach frame.
- What warranty does Ray-Ban offer on the RB4331?
- Ray-Ban provides a manufacturer warranty against defects in materials and workmanship. Warranty terms apply from the date of purchase. Island Water Sports is an authorized Ray-Ban retailer, so your purchase qualifies for manufacturer warranty service. Contact us in store or online if you need assistance with a warranty claim.
- Who owns Ray-Ban?
- Ray-Ban has been owned by EssilorLuxottica, the Italian eyewear conglomerate, since 1999. The brand was founded in the United States in 1937 and remains headquartered in Milan, Italy, under EssilorLuxottica's premium brands portfolio.