Hi there!

We are Raquel and Sofia, twin sisters bonded by many things, including the passion for Fashion Design.

We grew up together, and together we developed all kind of interests and skills, what lead us to the same university course. So, once more, we stayed together, and studied what we loved the most.

Now, we maintain together to create our own brand!

We are based in our beautiful country of Portugal, and you can find us at our atelier in Sesimbra, near the beach and the mountain.

There we do all the thinking, the research, brainstorming and design of our collections. There are a lot of fabric samples around us  as well as books ad cactus!

The patterns are made by us and we test each one of them in old fabrics until they are perfect at our eyes. Then we cut them in the final fabric and sew it with love. If need we do the printings or embroidery work.

In the end we do all the work of shooting the lookbook, campaign and product photos. We have a lot of fun doing it, as well as the marketing and promotion.

When we have to contract someone to help us in the patterning or sewing processes we choose local workers.

SIZ is distinguished by allying Clean and Crafty, in an urban, casual and dynamic result, and explore fabrics and techniques in the name of creative and aesthetic freedom.



At SIZ we only use sustainable materials: organic fabrics, sustainable fibres or deadstock from portuguese factories. 

You can find in our collections: organic cotton, lottus, Tencel and deadstock fabrics like denim, viscose etc.

We have canvas, satin, poplin, tule...

Take a look at our collection and see how you can be sustainable and cool at the same time!

Shipping Policy

If you are from Portugal your shipping is by CTT and you will receive it in 4 days. If you are from Europe , you are lucky! Your package will arrive in 3 to 5 work days by DHL Express . If you are from US you can order too! Your package will arrive in 5 to 10 days by DHL Express. Any customs fees are supported by the customer

Return Policy

SIZ accepts returns and exchanges on regular priced items that meet the following requirements: 1. Return is initiated and mailed back by the customer within 7 days of delivery date. 2. The item is new, unworn, unwashed and in original packaging with tags attached. You will be responsible for the cost of return shipping. Please note that all Sale items are FINAL SALE and cannot be returned. Exceptions include damaged items. If you would like to return a defective product, you must notify us no later than 7 days after delivery.

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