GOTS-certified Organic Cotton
GOTS-certified Organic Cotton: This fabric is made from organically grown cotton that is certified by the Global Organic Textile Standard (GOTS), ensuring it meets high environmental and social responsibility standards.
Clean & Care
To ensure the longevity and quality of your clothing, it is important to follow proper care instructions. Always wash your garments in cold water with similar colors to prevent color bleeding. Use a mild detergent and avoid bleach or harsh chemicals that can damage the fabric.
Size & Fit
Size & Fit Guide
We want you to love your piece — use this guide to find your perfect size and avoid returns.
| Size | EU Chest (cm) | UK/US Chest (in) | EU Waist (cm) | UK/US Waist (in) |
|---|---|---|---|---|
| S | 88–92 | 34.5–36 | 74–78 | 29.5–30.5 |
| M | 96–100 | 38–39 | 82–86 | 32–33.5 |
| L | 104–108 | 41–42.5 | 90–94 | 35–37 |
| XL | 112–116 | 44–45.5 | 98–102 | 38.5–40 |
How to Measure
- Wrap a tape measure around the fullest part of your chest with arms relaxed.
- Measure your natural waist and compare to chart.
- Choose the size that fits your largest measurement.
Fit by Style
- T-shirts & tanks: classic unisex — true to size. - Hoodies: relaxed and cozy — go with your usual size. - Wall art & accessories: no sizing needed.
Quick Tips
Fabric pre-shrinks ~2–3% after first wash. Prefer a relaxed fit? Go one size up. For a more fitted look, consider sizing down.
Still unsure? We offer free returns & exchanges within 30 days of delivery.
Shop Our Collection
Who we are
Atlantic Wave was born from a passion for the timeless beauty of Portugal’s coastlines and a deep commitment to sustainability. We craft eco-conscious apparel that captures the essence of Portugal’s vibrant culture, from its iconic landmarks to its powerful surf. Using only GOTS-certified organic cotton, our collections blend minimalist design with ethical production, ensuring that every piece is both stylish and kind to the planet. With each item, we aim to celebrate simplicity, nature, and the enduring charm of Portuguese heritage.
Frequent Questions
1. What materials are used in your T-shirts?
- Our T-shirts are crafted from high-quality organic cotton sourced from the esteemed brand Stanley/Stella. We prioritize sustainability and use 100% GOTS-certified organic cotton to ensure both comfort and eco-friendliness.
2. Do you offer international shipping?
- Yes, we proudly offer international shipping to bring the beauty of Portugal to customers worldwide. Shipping costs and delivery times vary based on the destination. Please check our Shipping Policy for more details.
3. Are your designs exclusive to your shop?
- Yes, all our designs are unique and exclusive to Atlantic Wave. We take pride in creating original and meaningful designs that reflect the essence of Portugal, particularly our beautiful coastal regions.
4. What is your return policy?
- We want you to love your purchase. If, for any reason, you're not satisfied, we accept returns within 14 days of delivery. Please review our Return Policy for detailed instructions on how to initiate a return.
5. Are your T-shirts ethically produced?
- Absolutely. We are committed to ethical and sustainable practices. Our T-shirts are produced using fair labor and environmentally responsible processes. We prioritize working with materials that are GOTS-certified, ensuring transparency and accountability in our production chain.
6. How can I track my order?
- Once your order is shipped, you will receive a confirmation email with a tracking number. You can use this number to track your order through the shipping carrier's website.
7. Can I change or cancel my order after placing it?
- We strive to process orders quickly to ensure prompt delivery. If you need to make changes or cancel your order, please contact us as soon as possible. Once the order has been shipped, changes or cancellations may not be possible.
8. How do I care for my T-shirt?
- To maintain the quality of your T-shirt, we recommend washing it in cold water, inside out, and air-drying or tumble-drying on low heat. Refer to the care instructions on the product tag for specific details.
9. Do you offer wholesale or bulk discounts?
- Yes, we offer wholesale options and provide discounts for bulk orders. Contact us directly through our Wholesale Inquiry form for more information on pricing and terms.
10. How can I contact customer support?
- We're here to assist you! For any questions, concerns, or assistance, please reach out to our customer support team at [email protected]. We aim to respond to inquiries within 24 hours.
General Product Safety Regulation GPSR
EU representative: HONSON VENTURES LIMITED, [email protected], 3, Gnaftis House flat 102, Limassol, Mesa Geitonia, 4003, CY
Product information: Stanley Stella STTU169, 2 year warranty in EU and Northern Ireland as per Directive 1999/44/EC
Warnings, Hazard: For adults, Made in Bangladesh
Care instructions: Machine wash: cold (max 30C or 90F), Non-chlorine: bleach as needed, Tumble dry: low heat, Iron, steam or dry: low heat, Do not dryclean