Decent shirt, kinda long
Quality is solid and the cotton isn't itchy, but the length hits a bit lower than I usually prefer.
GOTS Certified
OCS Certified
PETA Vegan
Fair Trade
Piston Architect Organic Cotton Tee | Engineered Design
$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
A Tribute to Engineering Precision
Where mechanical architecture meets sustainable design. The Piston Architect Tee is a statement piece for creators, innovators, and anyone who appreciates the intricate beauty of engineering. This minimalist, high-contrast graphic celebrates the engine's core, transformed into wearable art.
Meticulously Crafted for Conscious Comfort
We believe in design that feels as good as it looks. This tee is crafted from 100% GOTS-certified organic ring-spun cotton, offering an exceptionally soft feel from the very first wear. Our commitment to quality and sustainability is built into every fiber.
- Premium Organic Cotton: 180 g/m² GOTS-certified fabric for superior softness and durability.
- Innovative Printing: Water-based inks create a vibrant, lasting graphic that won’t crack or fade.
- Ethical & Vegan: PETA-Approved Vegan and manufactured to meet GOTS Social Criteria, ensuring fair and safe labor practices.
- User-Centric Fit: Features a relaxed, unisex European fit. We recommend our US clients select one size larger for optimal comfort.
Your purchase includes free shipping and our 30-Day Happiness Guarantee. Invest in design that lasts and upgrade your daily uniform with Design Delight Studio.
In compliance with the EU General Product Safety Regulation (GPSR), product safety inquiries: customersupport@ddsboston.com — Design Delight Studio, Boston, MA, USA.
Size guide
| BODY LENGTH (inches) | CHEST WIDTH (inches) | SLEEVE LENGTH (inches) | |
| S | 27 ⅛ | 19 ½ | 8 ⅞ |
| M | 28 ¾ | 21 | 9 ½ |
| L | 29 ½ | 22 ¼ | 9 ⅝ |
| XL | 30 ¼ | 23 ⅜ | 9 ⅞ |
| 2XL | 31 ⅛ | 25.00 | 10 |
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
4.5 2 verified reviewsSuper cool design
I saw this on my feed and had to grab one because the piston print looked so sharp. The fabric is honestly way softer than those basic shirts you get at the mall. It feels pretty light but still sturdy enough to handle a few washes.
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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.