Ergo Sum

A collection of self-expression apparel and professional identity gear. Celebrate your craft and relays who you are.

  • Professional Cat Herder women light blue graphic t-shirt with illustrated figures in professional attire Professional Cat Herder women white graphic t-shirt with illustrated figures in professional attire

    Professional Cat Herder – Graphic T-Shirt

    Professional Cat Herder – Graphic T-Shirt

    From $21.95 USD
    From $21.95 USD
  • What Doesn’t Kill You Mutates and Tries Again Mug What Doesn’t Kill You Mutates and Tries Again Mug

    What Doesn’t Kill You Mutates and Tries Again Mug

    What Doesn’t Kill You Mutates and Tries Again Mug

    $14.95 USD
    $14.95 USD
  • Technology Is Magic Kids T-Shirt – Science Wizard Tee Technology Is Magic Kids T-Shirt – Science Wizard Tee

    Technology Is Magic Kids T-Shirt – Science Wizard Tee

    Technology Is Magic Kids T-Shirt – Science Wizard Tee

    $20.95 USD
    $20.95 USD
  • Irrational & Well Rounded Just like Pi T-Shirt | Math Pi Circle Diagram Irrational & Well Rounded Just like Pi T-Shirt | Math Pi Circle Diagram

    Irrational & Well Rounded Just like Pi T-Shirt | Math Pi Circle Diagram

    Irrational & Well Rounded Just like Pi T-Shirt | Math Pi Circle Diagram

    From $21.95 USD
    From $21.95 USD
  • Failure Is Not An Option Rocket T-Shirt | Space Vintage Retro Typography Failure Is Not An Option Rocket T-Shirt | Space Vintage Retro Typography

    Failure Is Not An Option Rocket T-Shirt | Space Vintage Retro Typography

    Failure Is Not An Option Rocket T-Shirt | Space Vintage Retro Typography

    From $21.95 USD
    From $21.95 USD
  • In God We Trust The Rest Must Bring Data T-Shirt | American Flag Data Humor In God We Trust The Rest Must Bring Data T-Shirt | American Flag Data Humor

    In God We Trust The Rest Must Bring Data T-Shirt | American Flag Data Humor

    In God We Trust The Rest Must Bring Data T-Shirt | American Flag Data Humor

    From $21.95 USD
    From $21.95 USD
  • Atomic Number 24/7 Onnium Periodic Table Mug | Chemistry Humor Atomic Number 24/7 Onnium Periodic Table Mug | Chemistry Humor

    Atomic Number 24/7 Onnium Periodic Table Mug | Chemistry Humor

    Atomic Number 24/7 Onnium Periodic Table Mug | Chemistry Humor

    $14.95 USD
    $14.95 USD
  • Future CEO, Current Intern – Typography T-Shirt Future CEO, Current Intern – Typography T-Shirt

    Future CEO, Current Intern – Typography T-Shirt

    Future CEO, Current Intern – Typography T-Shirt

    From $21.95 USD
    From $21.95 USD
  • Not My Circus graphic black t-shirt layflat with vintage circus illustration and ringmaster text Female model wearing Not My Circus black graphic t-shirt with vintage circus illustration

    Not My Monkey – Graphic T-Shirt (Dark)

    Not My Monkey – Graphic T-Shirt (Dark)

    $21.95 USD
    $21.95 USD
  • My Voice Is My Canvas music graphic layflat t-shirt in white My Voice Is My Canvas music graphic t-shirt in white for women

    My Voice is My Canvas

    My Voice is My Canvas

    From $22.99 USD
    From $22.99 USD
  • I Bend to No One But Myself – Gymnastics T-Shirt (Dark) I Bend to No One But Myself – Gymnastics T-Shirt (Dark)

    I Bend to No One But Myself – Gymnastics T-Shirt (Dark)

    I Bend to No One But Myself – Gymnastics T-Shirt (Dark)

    $22.95 USD
    $22.95 USD
  • -11% SALE
    Funny Pi-rated t-shirt with pirate pie skull design and 3.14 rating printed on grey shirt Side facing male model wearing a funny Pi-rated t-shirt with pirate pie skull and 3.14 stars math humor design

    Pi-Rated Pirate Skull with Pie, T-Shirt | Math humor Pun Tee

    Sale

    Pi-Rated Pirate Skull with Pie, T-Shirt | Math humor Pun Tee

    $19.49 USD
    $21.95 USD $19.49 USD
  • Not All Superheroes Wear Capes – Science T-Shirt Not All Superheroes Wear Capes – Science T-Shirt

    Not All Superheroes Wear Capes – Science T-Shirt

    Not All Superheroes Wear Capes – Science T-Shirt

    $22.95 USD
    $22.95 USD
  • Not My Circus graphic white t-shirt layflat with vintage circus illustration and ringmaster text Female model wearing Not My Circus white graphic t-shirt with vintage circus illustration

    Not My Monkey – Graphic T-Shirt (Light)

    Not My Monkey – Graphic T-Shirt (Light)

    $22.95 USD
    $22.95 USD
  • I Bend to No One But Myself – Gymnastics T-Shirt (Light) I Bend to No One But Myself – Gymnastics T-Shirt (Light)

    I Bend to No One But Myself – Gymnastics T-Shirt (Light)

    I Bend to No One But Myself – Gymnastics T-Shirt (Light)

    From $21.95 USD
    From $21.95 USD