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Semaphore Hat - Funny Developer Humor Cap - Geek Gift for Programmers and CS Nerds
A nod to the synchronization primitive that holds multithreaded systems together — and the programmers who understand why that matters. The Semaphore Hat is a subtle, brilliantly nerdy developer humor cap that separates the CS graduates from the rest of the crowd at a glance.
Perfect for computer science students, backend engineers, systems programmers, and anyone who's ever debugged a deadlock at 2am. Adjustable fit, bold design, instant credibility among anyone who gets it.
- Funny CS and developer humor hat — niche enough to be exclusive
- Great gift for computer science students, backend devs, and OS enthusiasts
- Adjustable fit — one size works for most
- Printed on demand by Geekpsters, ships worldwide
Makes a perfect computer science gift, programmer birthday present, or "you finally passed your OS course" celebration hat. Will confuse exactly the right number of people.
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100% NO-RISK MONEY-BACK GUARANTEE
We think you'll adore your products! If you are not completely satisfied with your purchase, you can return or exchange it within 60 days.
You can find all of the information about our return policy here. Any more questions? Just contact us—our customer service team is happy to assist!
- Solid colors are 100% cotton
- Heather colors are 35% ring-spun cotton, 65% polyester;
- Sport Grey is 90% cotton, 10% polyester.
- Tubular body, modern classic fit
- Touchably soft
- Sleeves and bottom hem are double-needled stitched
- There are no side seams
- Neck and shoulders taped
- Made from specially spun fibers that make very durable and smooth fabric
- Do not bleach
- Tumble dry: low heat
- Iron, steam or dry low heat
- Do not dryclean
- Machine wash: warm (max 40C or 105F).
We owe it to you to ensure that you are satisfied with your order.
If your order is incorrect, you are unhappy with the prints, or it is not what you expected for any reason, please contact us and we will gladly replace or exchange any items free of charge.
Learn more:
https://geekpsters.com/pages/our-returns-are-hassle-free
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Size Chart
| Measurement | XS | S | M | L | XL | 2XL | 3XL | 4XL | 5XL |
|---|---|---|---|---|---|---|---|---|---|
| Width, in | 16.50 | 18.00 | 20.00 | 22.00 | 24.00 | 26.00 | 28.00 | 30.00 | 32.00 |
| Length, in | 27.00 | 28.00 | 29.00 | 30.00 | 31.00 | 32.00 | 33.00 | 34.00 | 35.00 |
| Sleeve length, in | 8.60 | 8.90 | 9.20 | 9.50 | 9.70 | 10.00 | 10.40 | 10.80 | 11.20 |
| Size tolerance, in | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 | 1.50 |














