Ray-Ban RB3778 Gunmetal / Dark Blue Polarized (RB3778 004/3R)

Design with an architect's character

There are sunglasses you wear and sunglasses you carry. The Ray-Ban RB3778 is the second kind. Its fine metal frame draws an irregular, almost architectural silhouette: angular lines that play with the light and do not go unnoticed, without shouting. It belongs to Ray-Ban's timeless collection — designed so that in ten years it still has the same presence as today. Gunmetal with polarized Dark Blue lenses is the most technical version of the family: same silhouette, maximum visual performance. The kind of frame you see on the street and remember.

Light, fresh and always in place

The first thing you notice is what you do not notice: the weight. The RB3778 is fine metal, so light that after a couple of hours you forget you are wearing it. Metal also feels cool against the skin, which is lovely in summer. And because the nose bridge is adjustable, the frame adapts to the shape of your nose: no marks, no slipping when you walk or turn your head. And because they are polarized, they remove the annoying glare from asphalt, water and car hoods: more contrast, truer colors and much safer driving. The mineral glass lenses keep your vision clean and sharp, and UV protection is included: you forget about it, but it is always there. For everyday city life, it is one of those pairs that does its job without asking for anything in return.

A real workshop behind the store

This is not just any online store: behind it there is an optical workshop with over 20 years of experience. When you buy at Centro Óptico Alpedrete you are helped by licensed optometrists with decades of experience. If you need an adjustment, a prescription or advice on which size suits you best, we are one message away. And if your glasses need a check-up or an adjustment, it is free, always. Shop with peace of mind: the human side is covered.

Original, in every sense

Authentic for real: this is an original Ray-Ban. The Ray-Ban logo is engraved on the frame and every unit leaves the factory with its model code. We are an official retailer, so what you receive is exactly what Ray-Ban designed: premium materials, careful finishing and the 2-year warranty that only comes with the originals. If you ever have doubts, look at the engraving: you can tell the original.

Frequently asked questions

Is it really lightweight? Yes, and you notice it from the first minute. The frame is fine metal, so the RB3778 weighs very little: you put it on in the morning and by mid-afternoon you have forgotten it is there. Polished metal also feels cool against the skin, a detail you appreciate on hot days.

Size 57 or 60, which one suits me? It depends on the shape of your face and how wide it is. Size 57 (57 mm lens) is the Geofit L fit: the standard option that suits most faces. Size 60 (60 mm lens) is the Geofit XXL, made for wider faces or for anyone who prefers a frame with more presence. If you are unsure, send us a front photo on WhatsApp and we will tell you which one fits you better.

Can I get prescription lenses in them? Yes, this model is prescription-ready: the crystal lens can be replaced with a custom prescription lens without touching the frame. Since we have our own workshop, if you need prescription lenses we can fit them for you, with your glasses ready in a few days and a free check-up.

Do they include a case and a cloth? Yes, every Ray-Ban RB3778 arrives with its official rigid Ray-Ban case and, as a gift, a microfiber cloth to clean the lenses without scratching them. It is the kind of cloth you appreciate: keep it in your pocket and leave your lenses spotless anytime.

What kind of face suits the irregular shape? The irregular line of the RB3778 especially flatters round and oval faces, because its angles balance the curves and add structure. It also works on more angular faces, adding a modern touch without hardening the look. It is a versatile shape that suits almost everyone.

What exactly do polarized lenses eliminate? They physically block horizontally reflected light: glare from asphalt, water or car hoods disappears. The result is more contrast, truer colors and none of that whitish veil that tires your eyes. That is why they are the classic choice for driving: fewer reflections and more safety behind the wheel.

Want to try them on?

Message us on WhatsApp and we will tell you if we have your size, put a pair aside for you or ship them to your door. This is the polarized version of the RB3778, the most requested one for driving. You can also drop by the optical shop and try them on in person — sometimes photos do not do them justice. We will be waiting for you.

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