FILM FANATICS SALE: UP TO 40% OFF SITEWIDE
ends soon
Sell your art
Login
Signup
Sweatshirts & Hoodies
Retro mountain with trees
Redbubble logo
Explore
For You
Retro Gaming
Horror
Sci-Fi
80s Fandoms
Pop-Culture
Fresh Finds
Fan Art
Blockbuster Movies
Clothing
New
All Clothing
T-Shirts
New
Hoodies & Sweatshirts
Hats
Socks
Dresses
Tank Tops
Stickers
All Stickers
Holographic Stickers
Funny Stickers
Car Stickers
Bumper Stickers
Water Bottle Stickers
Cool Stickers
Anime Stickers
Laptop Stickers
Magnets
Custom Stickers
Phone Cases
All Phone Cases
iPhone Cases
Samsung Galaxy
New
Wall Art
All Wall Art
Posters
Photographic Prints
Art Prints
Tapestries
Canvas Prints
Framed Prints
Art Board Prints
Home & Living
All Home & Living
Mugs
Throw Pillows
Throw Blankets
Tapestries
Magnets
Aprons
Coasters
Jigsaw Puzzles
Duvet Covers
Acrylic Blocks
Clocks
Shower Curtains
Bath Mats
Kids & Babies
All Kids Clothes
Kids T-Shirts
Baby One-Pieces
Kids Pullover Hoodies
Accessories
All Accessories
Hats
Socks
Pins
Backpacks
Tech Accessories
Tote Bags
Makeup Bags
Toiletry Bags
Zipper Pouches
Duffle Bags
Scarves
Stationery & Office
All Stationery & Office
Greeting Cards
Spiral Notebooks
Mouse Pads & Desk Mats
Postcards
Hardcover Journals
Gifts
All Gifts
Gifts for Book Lovers
Gifts for Gamers
Gifts for Her
Gifts for Him
Gifts for Animal Lovers
Gifts Under $50
Gifts for Outdoorsy Types
Gifts for Kids
Stocking Stuffers
Gift Cards
Pi Sweatshirts & Hoodies
1000+ items
Sweatshirts & H...
Filters (2)
1000+ items
Most Relevant
Cala Claas Agricultural aPi Seclusion Premium Oversized Hoodie
CamperOnLine
$47.85
$79.75
(40% off)
Euler's Number Digits Premium Oversized Hoodie
barkleysdesigns
$41.40
$69.00
(40% off)
Pi Number Math Symbol Science Orbit Geek Nerd Premium Oversized Hoodie
AnnSign
$51.75
$86.25
(40% off)
Pi Symbol Sketch Premium Oversized Sweatshirt
SymbolGrafix
$46.50
$62.00
(25% off)
1154 Digits of Pi Premium Oversized Hoodie
Marder Made
$41.40
$69.00
(40% off)
Chibi Stitch Pi-ka & Toothless Classic T-Shirt Pullover Sweatshirt
WADESUMNER
$31.45
$41.94
(25% off)
I'm sec c and I know it (math edition) Pullover Hoodie
scienceisfunny
$32.16
$42.89
(25% off)
Pi, π, spiral, Science, Mathematics, Math, Irrational Number, Sequence Premium Oversized Hoodie
nitty-gritty
$48.13
$80.21
(40% off)
Pi Symbol Sketch Premium Oversized Sweatshirt
SymbolGrafix
$46.50
$62.00
(25% off)
Worcester Polytechnic Institute WPI Pi Symbol Premium Oversized Hoodie
Bookish Blossom
$41.40
$69.00
(40% off)
Rainbow Pi Day Vintage Retro Natinoal Pi Day Premium Oversized Sweatshirt
Adolfo114
$46.50
$62.00
(25% off)
Be Rational Get Real Imaginary Math Pi Premium Oversized Hoodie
TheShirtYurt
$39.61
$66.01
(40% off)
Pi to 1000 digits Pullover Sweatshirt
Koolkati3
$31.45
$41.94
(25% off)
Magnum Christmas Sweater Premium Oversized Sweatshirt
MostlyMagnum
$44.56
$59.42
(25% off)
Magnum since 1980 Premium Oversized Sweatshirt
chillstudio
$46.50
$62.00
(25% off)
Funny Pie Style T-Shirt-Pi Day Shirts for Math Geeks Premium Oversized Sweatshirt
evaspark
$46.50
$62.00
(25% off)
Debian Premium Oversized Hoodie
simontals
$47.96
$79.93
(40% off)
Pi Christmas Math Science Algebra Premium Oversized Hoodie
elderberry
$41.40
$69.00
(40% off)
Pi Chi Omega 75 Years! Pullover Hoodie
pichiomega
$35.09
$46.79
(25% off)
Mathlete Mathletic Department PI 3.14 Math Calculus Puns Pullover Hoodie
Hananiah Merch
$33.63
$44.84
(25% off)
Inspire Inspirational Pi Symbol Premium Oversized Hoodie
TheShirtYurt
$39.61
$66.01
(40% off)
Happy Pi day 3.14 Pi Day Math Lover Teacher mathematics Premium Oversized Hoodie
Tigerr3g
$44.85
$74.75
(40% off)
Magnum PI New Sunset Premium Oversized Hoodie
Smpritch87
$41.40
$69.00
(40% off)
A Slice of Pi Premium Oversized Sweatshirt
Garaga
$46.50
$62.00
(25% off)
Euler is cool Premium Oversized Hoodie
spatulacity
$41.40
$69.00
(40% off)
Pi Chi Omega Denver Premium Oversized Sweatshirt
pichiomega
$46.50
$62.00
(25% off)
Pi Symbol Sketch Premium Oversized Hoodie
SymbolGrafix
$41.40
$69.00
(40% off)
Pi Digits Spiral — Still Not Finished Premium Oversized Sweatshirt
CalmWorldShop
$42.63
$56.84
(25% off)
Raspberry Pi Premium Oversized Hoodie
Redstrawberry13
$43.13
$71.88
(40% off)
Magnum Pi - Hawaii Premium Oversized Hoodie
BadgerofWater
$41.40
$69.00
(40% off)
Pi Day Number Math Symbol Cat Lover Geek Premium Oversized Hoodie
AnnSign
$51.75
$86.25
(40% off)
Pi Symbol Sketch White Premium Oversized Sweatshirt
SymbolGrafix
$46.50
$62.00
(25% off)
Apple Pi 3.14 Premium Oversized Hoodie
mwagie
$41.06
$68.43
(40% off)
Raspberry Pi Pico Art Premium Oversized Sweatshirt
cjnimoy
$46.50
$62.00
(25% off)
Born On Pi Day | Funny Pi Birthday Premium Oversized Hoodie
GravitiTees
$44.85
$74.75
(40% off)
ADHD butterfly symbol (medium) Premium Oversized Sweatshirt
Optimist Jenna: Neurodivergent Designs
$46.50
$62.00
(25% off)
Island Hoppers Magnum PI Premium Oversized Hoodie
Alema Art
$45.89
$76.48
(40% off)
I Love π Math Symbol Number Day Geek Premium Oversized Hoodie
AnnSign
$51.75
$86.25
(40% off)
MATH! Premium Oversized Sweatshirt
BessoChicca
$46.50
$62.00
(25% off)
Pi Day Funny Premium Oversized Sweatshirt
artworkbyrihen
$50.76
$67.69
(25% off)
Poodle Perfect Pi Companion - Mathematical Equation Dog Design Premium Oversized Sweatshirt
PunnyPawsShop
$46.50
$62.00
(25% off)
Funny Pi Day A Slice Of Pi Chart Math Teacher Student School Premium Oversized Sweatshirt
charissamo77
$54.25
$72.34
(25% off)
Vintage Don't Be Irrational Pi Day For Math Teacher Science Premium Oversized Hoodie
ALI-STORE-4Y
$44.85
$74.75
(40% off)
Pi Number Math Symbol Space Orbit Geek Nerd Premium Oversized Sweatshirt
AnnSign
$58.13
$77.51
(25% off)
Magnum pi - Tom Selleck Premium Oversized Sweatshirt
Alkantara80
$52.31
$69.75
(25% off)
Pi symbol for Pi day Premium Oversized Hoodie
FrictionMaxxing
$41.40
$69.00
(40% off)
Pi Number Math Symbol Science Space Orbit Geek Premium Oversized Hoodie
AnnSign
$51.75
$86.25
(40% off)
Funny Pi Day Quote - Pi Has An End Fight Me Pie Day Premium Oversized Hoodie
Theparticular
$39.33
$65.55
(40% off)
Magnum pi - Tom Selleck Premium Oversized Hoodie
KelsoBob
$41.40
$69.00
(40% off)
A Slice of Pi Premium Oversized Sweatshirt
Garaga
$46.50
$62.00
(25% off)
Pi Digits Premium Oversized Sweatshirt
lemonsugarwater
$46.50
$62.00
(25% off)
Godot - Nodes Premium Oversized Hoodie
Solo Geek
$41.75
$69.58
(40% off)
Rebooted Magnum P.I Black & White Streetwear Design Premium Oversized Hoodie
Natalie Eve Austin
$41.40
$69.00
(40% off)
Original Pi Chi Omega Logo Premium Oversized Hoodie
pichiomega
$41.40
$69.00
(40% off)
Magnum P.I Premium Oversized Hoodie
Alkantara80
$46.58
$77.63
(40% off)
Tom Selleck Premium Oversized Hoodie
Sharlaneill
$46.58
$77.63
(40% off)
Pi Day Pi Letter Stereoscopic Style Premium Oversized Hoodie
Go-Fun
$44.85
$74.75
(40% off)
Captain Philippines! (Grunge White Sun) Premium Oversized Hoodie
IsdaMan
$41.40
$69.00
(40% off)
I Love Pie - Funny Pi Day & Math Lover Premium Oversized Hoodie
Bandikonsalez
$37.95
$63.25
(40% off)
Cat Pi Number Math Symbol Lover Geek Nerd Lightweight Sweatshirt
AnnSign
$43.30
$57.74
(25% off)
Thomas Magnum - 80s design Premium Oversized Sweatshirt
BlueDoctor
$46.50
$62.00
(25% off)
Sierpinski, Triangle, Mathematics, Fractal, Math, Geometry Premium Oversized Sweatshirt
nitty-gritty
$54.06
$72.08
(25% off)
King Kamehameha Unlock Your Inner Magnum PI with Redbubble's King Magnum Merchandise Premium Oversized Hoodie
MagnumDesigns
$51.75
$86.25
(40% off)
Rebooted Magnum P.I TC_s _amp_ Shammy_s Island Hopper Design Premium Oversized Hoodie
Alkantara80
$46.58
$77.63
(40% off)
Pi Number - Pi Day π spiral Premium Oversized Sweatshirt
vladocar
$45.57
$60.76
(25% off)
Happy PI Day design Pullover Sweatshirt
bojan17779
$31.45
$41.94
(25% off)
Pi Day Dinosaur T-Rex Shirt Pi Day Math Gift Kids Teacher Premium Oversized Sweatshirt
Hananiah Merch
$44.56
$59.42
(25% off)
Mathlete Premium Oversized Sweatshirt
FengHua
$48.44
$64.59
(25% off)
3.14 Pi mirrors Pie Premium Oversized Sweatshirt
24FAHSION
$77.50
$103.34
(25% off)
I Ate Some Pie And It Was Delicious I Ate Some Pi Math Premium Oversized Sweatshirt
ZOUBAH
$44.95
$59.94
(25% off)
Live To Inspire Pi Day Student Teacher Funny LIMITED EDITION Premium Oversized Hoodie
BorranivmaStudi
$37.95
$63.25
(40% off)
I teach to inspire Premium Oversized Hoodie
Mesyo
$103.50
$172.50
(40% off)
I love math Funny Gift Premium Oversized Sweatshirt
GoldenDov
$46.50
$62.00
(25% off)
Pi Premium Oversized Hoodie
BoKev
$37.95
$63.25
(40% off)
Snoopy Magnum p.i. Premium Oversized Hoodie
ChunkByChunk
$36.57
$60.95
(40% off)
Zeus, Apollo, Kill! Premium Oversized Hoodie
Alkantara80
$46.58
$77.63
(40% off)
Pi Symbol Spiral Number Pi Day Premium Oversized Hoodie
Eng-Sun
$41.40
$69.00
(40% off)
Mathlete Mathletic Department Math PI Premium Oversized Hoodie
Hananiah Merch
$39.68
$66.13
(40% off)
Magnum Pi Magnum PI - Island Hoppers Premium Oversized Sweatshirt
Alkantara80
$52.31
$69.75
(25% off)
Captain Philippines! (For Blue Shirts Only) Premium Oversized Sweatshirt
IsdaMan
$46.50
$62.00
(25% off)
forza motorsport Pullover Hoodie
NCNGDESIGN
$35.67
$47.57
(25% off)
Pi Chi Omega at PestWorld 2023 Premium Oversized Hoodie
pichiomega
$41.40
$69.00
(40% off)
Cutie Pie Premium Oversized Hoodie
DocDesigns
$44.85
$74.75
(40% off)
Magnum PI Premium Oversized Hoodie
stevanyance
$45.89
$76.48
(40% off)
Pi Day Graphic Symbol Premium Oversized Sweatshirt
Marianne Campolongo
$53.09
$70.79
(25% off)
Magnum PI VM02 Da Nang Design -Get the Look with Magnum PI - Vietnam War Premium Oversized Hoodie
MagnumDesigns
$51.75
$86.25
(40% off)
Pi Day 2025 Pi 500 Digits Premium Oversized Sweatshirt
pi-day
$48.44
$64.59
(25% off)
Harry Banner Basic Premium Oversized Hoodie
SJHorsfall
$37.95
$63.25
(40% off)
Pi 3.14 Number Symbol Math Science Premium Oversized Hoodie
ValerieRodrigue
$37.95
$63.25
(40% off)
Euler's formula, complex numbers and math Premium Oversized Sweatshirt
NoetherSym
$46.50
$62.00
(25% off)
Become a member.
Get 25% off your first order.
Plus other neat perks and exclusive savings to help you find the very thing.
Sign up
Previous
1
2
3
10
Next
Clothing
Sweatshirt
Pi
Pi hoodies and sweatshirts are expertly printed on ethically sourced, sweatshop-free apparel and available in a huge range of styles, colors and sizes. If you like your hoodies baggy, go two sizes up.
Pi Day
Happy Pi Day
Math
Pi Symbol
3 14
Mathematics
Math Teacher
Geek
Pi Day 3 14
National Pi Day
Funny Pi Day
Pi Day Funny
Worldwide Shipping
Available as standard or express delivery
Learn more
- opens in new window or tab
Secure Payments
100% Secure Payment with 256-bit SSL encryption
Learn more
- opens in new window or tab
Free Return
Exchange or money back guarantee for all orders
Learn more
- opens in new window or tab
Local Support
24/7 Dedicated support
Learn more
- opens in new window or tab
