10,000+ satisfied customers

Every shirt tells a story—and we're proud of every single one!

High-quality & sustainable

Great store, fast shipping, and no unnecessary plastic waste. The shirt looks really high-quality. - Hannah O.

Great birthday present

Really nice shirt, great quality, and fits exactly as described. It was a huge hit as a birthday gift 😀 Thanks!! - Anna H.

My absolute favorite

My absolute favorite! Just picking it out was fun, and the delivery and packaging were top-notch. The quality is great—nice and firm but really soft. It’s still great even after washing. I’m super excited 🤩 - Britta K.

FAQs

Was bedeutet Bio-Baumwolle?

Organic cotton is grown and processed without synthetic chemicals, genetic engineering, or harmful dyes. It is environmentally friendly, conserves water, and ensures better working conditions—as certified by standards such as GOTS. (Of course, this applies only to products that are explicitly made from organic cotton.)

Great product—but why isn't it cheaper?

We’re committed to top-notch quality and make our products to order—and that comes at a price. You’ll receive one-of-a-kind pieces that bring joy and are definitely not off-the-rack! Check back regularly for our seasonal sales and snag some great discounts. Order more and enjoy additional savings that we’re happy to pass on to you. 🌟

Which designs should I choose?

Choose designs that reflect the person’s personality or that connect you—from personal hobbies to shared experiences. This way, you can create a meaningful, personalized gift.

How do the fabrics feel?

Our size charts will help you choose the right size. Just grab one of your favorite pieces of clothing and compare the measurements. In general, our products run true to size.

Can I return a product?

Since our products are customized specifically for you, returns are not permitted under the statutory right of withdrawal (Section 312g(2)(1) of the German Civil Code (BGB)).

But don't worry:

We offer a 30-day satisfaction guarantee so you can order with confidence—even for personalized items.

✔ Isthe product damaged or defective?

→ We'll replace it hassle-free and without any questions asked.

Is the size not what you expected?

→ We’ll work with you to find a fair solution—such as an exchange or a gift card.

✔ Not quite what you expected?

→ Contact us—we’ll review your case personally and make sure you’re satisfied in the end.

So you can order with complete peace of mind—we stand behind every single product.

More customer testimonials

Our Promise

Create your own one-of-a-kind items in just a few steps—personalized, sustainable, and full of meaning. We promise you joy, quality, and risk-free ordering thanks to our satisfaction guarantee —with fast shipping and top-notch support should you ever need help.

An idea born of friendship

How it all began

The idea for Studio Sonntag came about when we wanted to do something nice for a mutual friend. We designed a personalized shirt for him, his wife, and each of his children, featuring matching designs. The enthusiasm and gratitude we received inspired us to make this customization option available to everyone.

We hope you enjoy browsing and designing—and we hope our products bring just as much joy to you and your loved ones!

Heiko & Sven
Founders of Studio Sonntag

We'll help you right away

Do you need help, or do you have any questions or suggestions?

Contact us here!

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