Solid tee, but size up!
I was kinda worried about the sizing after reading the description, but I ordered a size up as suggested and it fits really well. The cotton feels super soft and the print quality is great.
GOTS Certified
OCS Certified
PETA Vegan
Fair Trade
The 'Too Many Problems' Math Teacher Tee | Sustainable Organic Cotton
$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
Calculate Your Comfort: The Ultimate Math Teacher Tee
Bring a little humor to the chalkboard with a tee designed for the brilliant minds who solve problems for a living. This shirt isn't just a clever pun; it's a testament to sustainable design and exceptional comfort, built for the modern educator.
Designed for Impact
- Sustainably Sourced: Crafted from 100% premium organic cotton, offering a soft, breathable fit that's kind to your skin and the planet.
- Certified Excellence: We believe in transparency. This tee is GOTS, GRS, and OEKO-TEX® certified, ensuring it meets the highest standards for organic fibers, recycled content, and chemical safety.
- Consciously Made: Proudly PETA-Approved Vegan, so you can wear your values with confidence.
- Durable by Design: A classic unisex fit built to last through countless equations and coffee breaks.
Sizing: Find Your Perfect Fit
Important Note for US Customers: Our sizes run slightly smaller. We recommend ordering one size up for the ideal fit.
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 reviewsLove this tee!
Honestly, just get it. It's awesome.
Hubby loved it!
Got this for my husband, who's a high school math teacher, and he thought it was hilarious. He says it's super comfy and breathable, which is huge for being in a classroom all day.
My new favorite work tee.
This is honestly my second tee from Design Delight Studio, and they just keep delivering. I'm a math tutor, and the "Too Many Problems" line always gets a chuckle from my students, which is pretty awesome. What I really love, though, is how soft this organic cotton feels against the skin all day, and it's holding up really well after multiple washes. Plus, knowing it's GOTS certified and PETA-Approved Vegan makes me feel good about my purchase.
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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.