Pretty good, glad I sized up
Wasn't sure about ordering a size up but glad I did, it fits way better. The organic cotton actually feels really good against the skin, not itchy at all.
GOTS Certified
OCS Certified
PETA Vegan
Fair Trade
Proton Graphic Tee | Ethically Engineered Organic Cotton by Design Delight Studio
$24.99
Why this tee:
- 100% GOTS-certified organic ring-spun cotton
- Stanley/Stella STTU169 substrate
- 5.3 oz/yd² (180 g/m²) mid-weight
- GOTS + OCS + PETA + OEKO-TEX® STANDARD 100 (Certificate No. 1112055, Centexbel)
- Unisex regular fit, XS-3XL
- Made-to-order via Printful, free worldwide shipping
Organic Cotton
Certified
Vegan Inks
Free Worldwide Shipping
30-Day Returns
Secure Checkout
Real Human Support
We Accept
Design a Better Future. Wear It.
The Proton Tee is a statement of principle, designed for the creative professional and thoughtful innovator. Its minimalist 'Positive Than a Proton' graphic is a subtle nod to the power of optimism in design, embodying the core values of our studio: innovation, sustainability, and user-centricity.
This isn't just apparel; it's a piece of your professional toolkit, crafted to inspire confidence and creativity.
Engineered for Humans, Designed for the Planet
We believe in building products that solve problems—for you and for our world. That's why every detail is consciously considered.
- User-Centric Comfort: Crafted from premium 100% GOTS-certified organic cotton for a soft, yet structured feel that supports you through every creative challenge.
- Sustainable Innovation: Ethically produced in carbon-neutral facilities, our PETA-Approved Vegan tee embodies our commitment to designing a healthier, more equitable future.
An Architect's Precision: The Perfect Fit
Great design is intuitive and inclusive. Our unisex tees feature a modern, European fit. To ensure optimal comfort and a more relaxed silhouette, we recommend our US customers select one size larger than their usual size.
Size guide
In compliance with the EU General Product Safety Regulation (GPSR), product safety inquiries: customersupport@ddsboston.com — Design Delight Studio, Boston, MA, USA.
Virtual Fit Room
Want to see how this fits? Upload a photo or use your camera to try it on instantly.
| Size | Length | Width | Sleeve |
|---|---|---|---|
| S | 27 ⅛" | 19 ½" | 8 ⅜" |
| M | 28 ¾" | 21" | 9 ½" |
| L | 29 ½" | 22 ¼" | 9 ⅝" |
| XL | 30 ¼" | 23 ⅜" | 9 ⅞" |
| 2XL | 31 ⅛" | 25" | 10" |
| Size | Length | Width | Sleeve |
|---|---|---|---|
| S | 69 cm | 49.5 cm | 22.5 cm |
| M | 73 cm | 53.5 cm | 24 cm |
| L | 75 cm | 56.5 cm | 24.5 cm |
| XL | 77 cm | 59.5 cm | 25 cm |
| 2XL | 79 cm | 63.5 cm | 25.5 cm |
How to Measure
Length: Measure from high point of shoulder to bottom hem.
Width: Measure across chest, 1" below armhole, laying flat.
Sleeve: Measure from shoulder seam to sleeve end.
Fabric: 5.3 oz./yd² (180 g/m²) • EU sizing - consider ordering one size up
Customer Reviews
4.8 4 verified reviewsSo comfy, love it!
OMG, literally perfect tee.
Perfect gift for a science enthusiast!
My boyfriend is a huge science nerd and this was the perfect gift. He wears it all the time and says it's super soft.
My new favorite tee, second one from them!
This is actually my second tee from Design Delight Studio, and honestly, the quality just blows me away every time. I wore my first one until it literally fell apart (after like 3 years!), and this new 'Proton' design is just as good, maybe even softer. It's awesome knowing it's organic and ethical too; makes me feel pretty good wearing it, not just comfy. The fit is solid, but yeah, definitely size up if you're in the US!
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Answer First
Core Specifications
- Material
- 100% GOTS-certified organic cotton (Stanley/Stella STTU169)
- Fabric Weight
- 5.3 oz/yd² (180 g/m²) — varies 4.6–5.3 by color
- Fit
- Unisex regular fit
- Available Sizes
- XS – 3XL
- Certifications
- GOTS, GRS, OCS, OEKO-TEX STANDARD 100 (cert 1112055), PETA-Approved Vegan — held by Stanley/Stella (via Printful)
- Print Method
- DTG (Direct-to-Garment) with water-based vegan inks. No PVC, phthalates, or heavy metals.
- Production
- Made-to-order via Printful POD network. Designed in Boston.
- Country of Print
- USA, Canada, Mexico, EU (varies by fulfillment center)
- Care
- Machine wash cold inside-out. Tumble dry low. Do not bleach. Iron inside-out on low.
TRY BEFORE YOU BUY — FREE
See the Fit. Skip the Returns.
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Virtually try on our certified-substrate apparel — GOTS organic cotton, GRS recycled polyester, OEKO-TEX Standard 100 — to see the perfect fit before you buy.
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Frequently Asked
What is this product made of?
See the Core Specifications card above for full material composition, fabric weight, and supplier-held certifications.
Who holds the GOTS / GRS certifications?
Our garment supplier (Stanley/Stella for most apparel, sourced via Printful) holds the GOTS and GRS licenses. DDS sells the finished apparel; the certifications cover the materials used in production. You can verify each cert directly on our transparency page.
How is this printed?
Direct-to-Garment (DTG) printing with water-based vegan inks that are OEKO-TEX Standard 100 substrate. No PVC, no phthalates, no heavy metals. The print process itself is PETA-Approved.
When will I get it?
Every item is made-to-order via our print-on-demand network (Printful). Handling is typically 1-3 business days; transit is 5-14 days worldwide. Shipping is free.
What is your return policy?
30-day returns. Items must be unworn and in original condition. Free returns by mail.
What's the fit and how should I choose a size?
Unisex regular fit, true-to-size. Stanley/Stella STTU169 runs slightly slim through the shoulders; if you prefer a roomier drape, size up one. Available XS–3XL. Full chest, length, and sleeve measurements in inches and centimeters appear when you select a size on the variant picker.
Quick Answer
This is a Stanley/Stella STTU169 100% GOTS-certified organic cotton t-shirt, 5.3 oz/yd² (180 g/m²), unisex fit, printed on demand by Printful with water-based vegan inks. Stanley/Stella holds the GOTS, GRS, OEKO-TEX, and PETA-Approved Vegan certifications across the substrate. 30-day returns, free worldwide shipping.