Viseu - Unisex Bio Acetate Sunglasses



Introducing Viseu sunglasses, the ultimate blend of style, sustainability, and comfort. These big squared-shaped sunglasses are made from high-quality plant-based acetate, sourced from wood pulp and cotton fibers, and mixed with natural plasticizers, making them both eco-friendly and lightweight. The scratch-resistant, shock-resistant, polarized, and maximum protection UV 400 lenses ensure that your eyes stay safe and comfortable, even in the brightest conditions.

Suitable for both men and women, Viseu sunglasses offer a perfect fit and unparalleled protection. Whether you're out for a run or lounging in the sun, Viseu sunglasses are the perfect accessory to elevate your style game while doing your part for the environment. Choose Viseu and step out in confidence, knowing that you're making a positive impact on the planet.

Material: High-Quality Plant-based Bio Acetate (Lenses are changeable) 
Color: Varies
Lenses: Varies | New Generation of lenses with 9 layers of protection!

- 2 layers scratch-resistant,

- 2 layers shock-resistant,

- 4 layers of UV400 protection (maximum UV protection) and

- 1 main layer polarized). 

Costa Tortoise - Unisex Bio-Acetate Sunglasses

Measurements: (52- 18-148)



Europe up to 4 - 7 business days,

United States and Canada up to 4 - 7 business days,

rest of the World up to 8 - 10 business days

All of our shippings are climate carbon neutral. We've established a partnership to offset any carbon emissions during shipping.

What else do you get?

With your order, you will also receive:

2-year guarantee

Tri-fold sustainable cork sunglasses case

✔ A microfiber eco friendly sunglasses cloth

✔ A linen sustainable sunglasses bag

60-day free exchange and returns

Make an Extra Impact

Not only do the sunglasses look great, but they also give back to the environment in an amazing way: when you make an order, we compromise to plant 3 trees and support the development of community solutions in projects around Africa like Ethiopia, Uganda, Kenya, Mozambique, and actively remove 1kg of plastic from the oceans in projects around Brazil and Indonesia. All of this through our partnerships with environmental projects as the Eden Reforestation Projects and the Plastic Bank.

wood sunglasses

All of our designs are individually handcrafted. You will get a product that has ensured attention to detail regarding quality and we are fully comitted to them, offering you a 2-year warranty. Your pair of sunglasses will be replaced if with any defects caused by materials and workmanship.

wood sunglasses

Change from regular damaging metal and plastic sunglasses frames to eco-friendly sustainable, resistant and biodegradable frames made from FSC certified bamboo, cotton fibers and wood.

wood sunglasses

New Generation of lenses with 9 layers of protection (2 layers scratch-resistant, 2 layers shock-resistant, 4 layers of UV400 protection (maximum UV protection) and 1 main layer polarized) approved by CE (UE) and the FDA (USA).

wood sunglasses
wood sunglasses

Put your glasses on and help save the world! That's right, YOU get to wear stylish eco-friendly sunglasses that not only look great but can help make a difference. With every purchase, through partnerships with the Plastic Bank & the Eden Reforestation Projects, you will be planting 3 trees in Africa while removing 1kg of plastic from our oceans.

wood sunglasses

Plus, our designs are modern and trending to you and most people's expectations and desires, always innovating to have a slightly different look than what is already out there. Using these reliable materials, and with your support, we strive to create a brand of sunglasses recognized as top notch, green, sustainable, positive, and conscious.

Customer Reviews

Based on 189 reviews
Bavo Loccufier
Superb pair of sunglasses

This is my second pair after accidentally destroying my old ones. Got a nice discount after returning the broken pair, great service!
The glasses have a very premium feel and are solidly built. It comes with a nice set of accessories.
And they are not overpriced, which is rather important to me as well.
Very happy!

Meghan T
Lightweight and Lovely

I was surprised by how lightweight these sunglasses are. Makes them extra comfy on my face, and so easy to carry around in my purse. Overall love the product a lot, from the materials to the fit to the style. If in need of a second pair, they’ll be another Joplins for sure.


Dankeschön, sehr schön, sehr modern, sehr edel, sehr zeitlos,…..

Liebe Grüße aus Graz

Unique, comfortable

Nice looking and feeling sunglasses. They’re more unique than a lot of other glasses. I have a small head and they are almost too narrow, so keep that in mind when buying

Incrível !!

Óculos de altíssima qualidade! Leve e encaixe perfeito no rosto!!


What materials are used in Joplins Sunglasses?

From saplings to shades, your sunglasses are made with the earth in mind. The crafted stylish frames are from reprocessed FSC-certified natural wood and an innovative Italian Mazzuchelli eco-friendly acetate that contains materials like wood pulp or cotton fibers mixed with natural plasticizers as citric acid esters.

How do I know that Joplins Sunglasses will fit me?

You can enjoy the fun of the VIRTUAL TRY ON option so you can give frames a test drive before committing (simply click on the "TRY ON NOW" button on the bottom right side of any product page).

Still unsure about what style will make your features shine? :) Check out our easy peasy FACE SHAPE GUIDE and let it do all the hard work.

On top of that, you get a 60-DAY TRIAL, so if you receive your JOPLINS and didn't like the fit, you can still exchange for another model or simply return and we will make you refund.

Can the Joplins sunglasses be washed in water?

Indeed! You can wash and clean them as many times you want, but before you try to keep up with Aquaman (or any of his pals), note that saltwater and chlorine can do some damage to the lenses. So maybe save the deep sea diving for something else :)

Do you do international shipping? How much is it?

Yes, we do! And they are all carbon neutral. We've established partnerships to offset any carbon emissions we have during shipping - And you will get free shipping on orders above 99 USD/EUR.

Where is my tracking number? 

In just a few days you'll get to join the exclusive club of people with tracking numbers :) All it takes is a purchase and an email, then - bam- your journey begins! Tracking numbers will be provided in 1-3 business days after purchase. You will receive a shipping confirmation email.

What is your policy on exchange and refunds? 

You get a 60-day satisfaction guarantee. So if you're looking for an exchange or refund just let us know and we'll sort it out.