Tap / click on image to see more RealViewsTM
Sale Price $28.80.  
Original Price $32.00 Comp. value
per shirt
You save 10%

Pi Sweatshirt – Geeky & Math-Inspired Comfort!

4.7 out of 5 stars rating
34447 Total Reviews |
by
Qty:
Style
Basic Sweatshirt
-$11.25
-$11.25
-$12.45
-$2.65
Color & Print Process
White
Classic Printing: No Underbase
+$2.05
+$2.05
+$2.05
Vivid Printing: White Underbase
+$5.15
+$5.15
+$5.15
+$5.15
+$5.15
+$5.15
+$5.15
+$5.15

Other designs from this category

About T-Shirts

Sold by
T-ShirtCreate your own from scratch

Style: Men's Basic Sweatshirt

Brave any outdoor activity in the comfort of this classic crewneck sweatshirt. It’s both plush and durable in its construction – a true staple for any wardrobe that will last. Select a design from our marketplace or customize it to make it your own!

Size & Fit

  • Model is 6’0” and wearing a medium
  • Standard fit
  • Fits true to size

Fabric & Care

  • 10oz. cotton-poly blend with a 100% cotton face
  • Set-in sleeves and double-needle stitched neckline, armholes and bottom band for long-term durability
  • Imported
  • Machine wash cold. Tumble dry low.

About This Design

Pi Sweatshirt – Geeky & Math-Inspired Comfort!

Pi Sweatshirt – Geeky & Math-Inspired Comfort!

Show off your love for math and individuality with this "Stay Irrational" Pi Sweatshirt! Featuring a bold and stylish design inspired by the infinite and irrational nature of π (pi = 3.14159...∞), this cozy sweatshirt is perfect for math lovers, teachers, students, and STEM enthusiasts. Whether you’re celebrating Pi Day (March 14th), studying calculus, or just embracing your geeky side, this sweatshirt is a must-have for anyone who knows that being irrational is sometimes the smartest move! 🔢 Perfect for: ✔️ Math lovers & nerds ✔️ STEM students & teachers ✔️ Pi Day (March 14th) outfits ✔️ Cozy study sessions ✔️ Unique & geeky fashion
WastCreation
Artwork designed by
View their Store

Customer Reviews

4.7 out of 5 stars rating34.4K Total Reviews
26994 total 5-star reviews5249 total 4-star reviews1172 total 3-star reviews532 total 2-star reviews500 total 1-star reviews
34,447 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Pavel T.March 19, 2018 • Verified Purchase
Basic Sweatshirt, White, Large
Creator Review
Overall very high quality , nice and neat. The fabric feels very comfy, durable yet very natural. The print itself is very detailed (black is not 100% black, but that's OK). 99 out of 100.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Nancy H.November 25, 2025 • Verified Purchase
Basic Sweatshirt, White, Large
Absolutely awesome. I love everything about this sweatshirt! It's color, design, the message about JOY from Snoopy, Peanuts Woodstock. I really like having a Men's basic sweatshirt, white, adult L! .
5.0 out of 5 stars rating
5 out of 5 stars rating
By Gordon G.March 4, 2026 • Verified Purchase
Basic Sweatshirt, Black, Small
As ordered. Good job.

Tags

T-Shirts
pi sweatshirtstay irrational sweatshirtmath geek clothingpi day apparelnerdy math sweatshirtstem fashioncalculus lover giftinfinity math designunique geeky sweatshirtmathematical pi clothing
All Products
pi sweatshirtstay irrational sweatshirtmath geek clothingpi day apparelnerdy math sweatshirtstem fashioncalculus lover giftinfinity math designunique geeky sweatshirtmathematical pi clothing

Other Info

Product ID: 256432253411556727
Created on: 2/24/2025, 5:27 PM
Rating: G 
Related Searches
mens hoodiesmens hoodies