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Have you ever felt a desire to doom all the inhabitants of the Earth? Are you convinced the Armada's coming to crush mankind? Is the phrase 'PITIFUL HUMAN' part of your everyday vocabulary? Then this might be the cap for you!

Inspired by the cult classic cartoon Invader ZIM, in honor of InvaderCON, this Irken fleece hat is the perfect choice for any Invader ZIM fan (or member of a conquering intergalactic army.) Designed by Saeru and crafted by hand, these caps are a fun and quirky addition to anyone’s winter wardrobe, to wear around a convention, or an eye-catching accessory out on the street.

Our Irken cap is made from soft, lightweight and durable fleece, ensuring your head will be warm and comfy on all your planet-crushing missions. The antennae are supported by lightweight foam cones, which can be easily removed and reinserted if you ever need to clean it. Our Irken cap is machine washable, but make sure to turn it inside out and line dry it to keep it looking its best.


This listing is for a CUSTOM fleece Irken cap. You pick the SKIN COLOR, EYE COLOR, and EYE SHAPE!

SKIN COLOR: Please choose either APPLE or MELON fleece.
EYE COLOR: Please choose one of the nine options listed above. If there's another color you're interested in that you don't see above (like black, white, gray, or anything else), send us a note and we'll see what we can do to get you the color you want!
EYE SHAPE: Please choose OPEN, SQUINT, or TALLEST. If you would like a custom eye shape, feel free to send a note.


- SMALL (21”-22” circumference; recommended for younger teens or people with small heads)
- MEDIUM (23”-24" circumference; default size will fit most adults)
- LARGE (25”-26” circumference; recommended for adults with large heads or for wearing over a wig)

Please note that fleece does stretch slightly, and that Irken caps look best when they fit snugly. If in doubt, go with a medium!


To clean, we recommend first REMOVING THE CONES and then hand-washing in cool water with mild detergent. You can also wash our hats in the machine—be sure to turn your hat inside-out and use the gentle/delicate cycle and cool or cold water! DO NOT dry in a tumble-dryer; air drying will keep your hat looking its best!

Wrinkles in the fleece will generally work themselves out as you wear your hat, but you can also gently iron it on LOW.



This item is made-to-order! PLEASE ALLOW up to one week for construction before your hat ships!

DOMESTIC: Hats will be shipped via first-class mail and generally arrive within a week of the shipping date. Online tracking is included in shipping price.
INTERNATIONAL: Hats will be shipped via first class airmail. Delivery/customs time varies by country. Online tracking is not included by default, but can be added on *prior* to check-out if a different shipping option is requested.

If you require Priority Mail or Express Mail, please contact us PRIOR to check out to request a custom shipping quote. Shipping speed CANNOT be changed after check-out.

Hats will be shipped in a manila envelope.

CUSTOM Invader ZIM Irken cap - handmade fleece alien cap


  • Handmade item
  • Materials: fleece, craft foam
  • Made to order
  • Ships worldwide from United States
  • Feedback: 155 reviews
  • Favorited by: 199 people