T-Shirts Designed in the USA

PI Day Is Outta This World Unisex t-shirt

$19.99

USD
size: S
color: Black Heather
  • Designed in the USA
  • 10% of all profits go to charity
  • Secure checkout with Stripe

This t-shirt is everything you've dreamed of and more. It feels soft and lightweight, with the right amount of stretch. It's comfortable and flattering for all.

  • 100% combed and ring-spun cotton (Heather colors contain polyester)
  • Fabric weight: 4.2 oz./yd.² (142 g/m²)
  • Pre-shrunk fabric
  • Side-seamed construction
  • Shoulder-to-shoulder taping

Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.

Pi Day gets the exaggeration it deserves

March 14 gets marked on calendars for one reason: 3.14, the start of pi. It has turned into a real day where teachers hand out pie and math clubs actually get excited about a number.

Calling it outta this world plays up the joke on purpose. Pi never repeats and never ends, so stretching the hype into cosmic territory fits the number's reputation. Most of what sits on our racks counts as patriotic shirts, this one just gives the calculator crowd their turn.

PI Day Is Outta This World Unisex t-shirt in Army, product mockup

Comfortable enough for the whole Pi Day party

This is a soft cotton tee built for regular days like the classroom or the office, not just for a themed party once a year. Toss it on and forget you're wearing a math joke.

It comes in twelve colors, so there's room to match a classroom theme or just pick whatever's already in the closet. Works as a gift for the teacher who never lets Pi Day pass quietly.

PI Day Is Outta This World Unisex t-shirt in Black, product mockup

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PI Day Is Outta This World Unisex t-shirt

Size Guide

SizeLength (in)Chest (in)Width (in)
XS2731-3416.5
S2834-3718
M2938-4120
L3042-4522
XL3146-4924
2XL3250-5326
3XL3354-5728
4XL3458-6130
5XL3562-6532
SizeLength (cm)Chest (cm)Width (cm)
XS68.678.7-86.441.9
S71.186.4-9445.7
M73.796.5-104.150.8
L76.2106.7-114.355.9
XL78.7116.8-124.561
2XL81.3127-134.666
3XL83.8137.2-144.871.1
4XL86.4147.3-154.976.2
5XL88.9157.5-165.181.3

Measurements are provided by our print partner and may vary by up to 2 inches (5 cm). Length and width are garment measurements taken flat. Chest is a body measurement: measure around the fullest part of your chest.

Diagram showing where each measurement is taken