Skip to product information
Celebrate curiosity and math joy with this vibrant Pi Day tee. Bold, hand-drawn numerals of pi burst in rainbow colors behind a large, stylized π symbol, while “HAPPY PI DAY” anchors the design with playful energy. The classic crew silhouette and medium-weight cotton give it an easy, lived-in feel — wear it to classroom events, bake-offs with friends, or casual campus strolls. It’s built to last through washes and study sessions, and the soft neck and tear-away label keep distractions low so the focus stays on the fun. This shirt reads as both clever and warm — a quiet nod to thinkers, teachers, and anyone who loves a slice of math and community.
Product features
- 100% cotton solid colors; medium weight (180 g/m²) for year-round comfort
- Tubular knit (no side seams) for a smooth, waste-reducing finish
- Ribbed, elastic collar and shoulder tape to maintain shape and prevent stretching
- Dual printing: DTF for sleeves/inner label and DTG for main art, ensuring crisp, colorful detail
- OEKO-TEX® certified fabric, tear-away label, and EU 2-year warranty
Care instructions
- Non-chlorine: bleach as needed
- Do not iron
- Do not dryclean
- Machine wash: cold (max 30C or 90F)
- Tumble dry: low heat
Happy Pi Day Tee
$25.00
Sale price
$25.00
Regular price
Shipping calculated at checkout.
| S | M | L | XL | 2XL | 3XL | 4XL | 5XL | |
|---|---|---|---|---|---|---|---|---|
| Width, in | 18.00 | 20.00 | 22.00 | 24.00 | 26.00 | 28.00 | 30.00 | 32.00 |
| Length, in | 28.00 | 29.00 | 30.00 | 31.00 | 32.00 | 33.00 | 34.00 | 35.00 |
| Sleeve length (from center back), in | 15.10 | 16.50 | 18.00 | 19.50 | 21.00 | 22.40 | 23.70 | 25.00 |
| Size tolerance, in | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 |
Product features
- 100% cotton solid colors; medium weight (180 g/m²) for year-round comfort
- Tubular knit (no side seams) for a smooth, waste-reducing finish
- Ribbed, elastic collar and shoulder tape to maintain shape and prevent stretching
- Dual printing: DTF for sleeves/inner label and DTG for main art, ensuring crisp, colorful detail
- OEKO-TEX® certified fabric, tear-away label, and EU 2-year warranty
Care instructions
- Non-chlorine: bleach as needed
- Do not iron
- Do not dryclean
- Machine wash: cold (max 30C or 90F)
- Tumble dry: low heat