Weathered-texture blue retro trucker cap with a woven patch of Blue Yip-Yip from Sesame Street on a black background with stars, blue-bordered patch, black mesh sides with white Overlord logo.
Close-up of a woven patch showing Blue Yip-Yip from Sesame Street with mouth open on a black starry background, teal-bordered patch stitched onto a weathered-texture blue cap.
Model wearing the blue Blue Yip-Yip retro trucker cap with a black mesh side.
Weathered-texture teal retro trucker cap with a woven patch of Blue Yip-Yip from Sesame Street on a black background with stars, teal-bordered patch, black mesh sides with tan Overlord logo.
Underside of the Blue Yip-Yip retro trucker cap showing a dark gray brim print with star icons, an Overlord Sesame Street tag, black mesh crown, and black Overlord branded taping with yellow text.
Weathered-texture blue retro trucker cap with a woven patch of Blue Yip-Yip from Sesame Street on a black background with stars, blue-bordered patch, black mesh sides with white Overlord logo.
Close-up of a woven patch showing Blue Yip-Yip from Sesame Street with mouth open on a black starry background, teal-bordered patch stitched onto a weathered-texture blue cap.
Model wearing the blue Blue Yip-Yip retro trucker cap with a black mesh side.
Weathered-texture teal retro trucker cap with a woven patch of Blue Yip-Yip from Sesame Street on a black background with stars, teal-bordered patch, black mesh sides with tan Overlord logo.
Underside of the Blue Yip-Yip retro trucker cap showing a dark gray brim print with star icons, an Overlord Sesame Street tag, black mesh crown, and black Overlord branded taping with yellow text.

OVERLORD™ x Sesame Street - Blue Yip-Yip

OVERLORD™ x Sesame Street - Oscar The Grouch
OVERLORD™ x Sesame Street - Cookie Monster
OVERLORD™ x Sesame Street - Elmo
OVERLORD™ x Sesame Street - Grover
OVERLORD™ x Sesame Street - Snuffleupagus
OVERLORD™ x Sesame Street - Bert
OVERLORD™ x Sesame Street - Ernie
OVERLORD™ x Sesame Street - The Count
OVERLORD™ x Sesame Street - Big Bird
OVERLORD™ x Sesame Street - Super Grover
OVERLORD™ x Sesame Street - Two-Headed Monster
OVERLORD™ x Sesame Street - Blue Yip-Yip
OVERLORD™ x Sesame Street - Pink Yip-Yip
OVERLORD™ x Sesame Street - Abby Cadabby
OVERLORD™ x The Monster at the End of This Book – Grover
OVERLORD™ x Sesame Street - Sherlock Hemlock (Cashmere)
OVERLORD™ x Sesame Street - Zoe
OVERLORD™ x Sesame Street - Telly Monster
OVERLORD™ x Sesame Street – Alistair Cookie
OVERLORD™ x Sesame Street – Frazzle
OVERLORD™ x Sesame Street - Alligator King
$50
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Sizing Guide

Static & Style: The OVERLORD x Blue Yip Yip Martian Trucker Cap

Dial up the strange with the OVERLORD Blue Yip Yip Martian Trucker Cap—a deep-space dose of deadpan alien energy. Known for his delayed reactions and exaggerated yips, the Blue Martian is the cosmic cousin who’s always a step behind—but somehow cooler for it. This cap channels that spaced-out swagger into something perfectly weird and wonderfully wearable.

For the ones who hear static, feel chill, and still steal the scene.

Features:
🛸 Iconic Blue Martian design with big-eyed charm and otherworldly vibes
💙 Structured fit that brings galactic goofiness down to Earth
🎁 Ideal for introverted oddballs, lovers of vintage sci-fi, and those who run on pure confusion

✅This is an officially licensed Sesame Street Workshop product.

  • Fabric: 80% POLYESTER / 20% COTTON
  • Brim: 2 1/2"
  • Closure: Snapback
  • Size: ONE SIZE (Adult)
FREE SHIPPING ON DOMESTIC USA ORDERS OVER $100! 

Most orders are processed within 1-3 business days. Delivery usually takes 3-7 business days. Orders are not shipped on weekends or holidays.

INTERNATIONAL SHIPPING POLICY

We ship to the United States, Canada, Australia, New Zealand, United Kingdom, European Union (Select Countries), Japan, South Korea, Israel, and more.  All orders currently ship with DHL or UPS, carrier rates are shown at checkout.

For further assistance email: rule@overlordcaps.com

Customer Service hours: Monday - Friday: 9am - 5pm EST

Customer Reviews

Overall rating: 5.0 / 5 from 19 reviews.

All three caps I purchased are exactly like I expected- great colors, nostalgic characters and great quality. Love them all.

Nancy B. 5/5 Verified

OVERLORD™ x Sesame Street - Blue Yip-Yip

Purchased this as a gift for my sister and it was beyond my expectations. Totally worth it and it arrived in a cute box.

Andrea M. 5/5 Verified

OVERLORD X Sesame Street: Blue Yip-Yip

I bought one for me and one for my fiancé. He wears the blue one and I wear the pink one. We now yip yip at each other in public and laugh. It's bringing us & others joy in these anxiety inducing times. Thanks for that. :)

Heather M. 5/5 Verified

OVERLORD X Sesame Street: Blue Yip-Yip

After getting my first Overloaed cap I knew I needed more and ordered 3. The quality is unmatched and am complemented on them all the time. I will be getting another very soon. Highly recommend!

Michael P. 5/5 Verified

OVERLORD X Sesame Street: Blue Yip-Yip

This is my third order with Overlord! Superior quality! So many compliments. This is the second cap that I’ve bought my significant other. Not only am I obsessed, but everyone stops us on the street to give us compliments!

Kristen R. 5/5 Verified

OVERLORD X Sesame Street: Blue Yip-Yip

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