Party Shirt International

Party Shirt International It's shirt season.

Since the invention of rivers, Shirt Season and River Season have walked hand in hand. Every year. Throughout all of tim...
03/04/2026

Since the invention of rivers, Shirt Season and River Season have walked hand in hand. Every year. Throughout all of time. Rapids, inflated aquatic travelers, blocks of melting ice, loaded groovers, and quick-wet, sports-mode party tarps. They just go together.

02/27/2026

Deep in the desert of southern Arizona sits a town of 4,000.
A 24-hour town.

Powered by dust, chain l**e, questionably sealed wine bags, and the unwavering belief that one more lap is necessary.

It’s not. But everyone does it. Thanks for having us

We do not know what this gathering means but it appears to unlock 25% off Sun Hoodies for all…
02/17/2026

We do not know what this gathering means but it appears to unlock 25% off Sun Hoodies for all…

You are the sunshine to my aggressively struggling houseplants.The emotional support burger to my 15 minute commute home...
02/14/2026

You are the sunshine to my aggressively struggling houseplants.

The emotional support burger to my 15 minute commute home.

My universe.
My very own black hole.
My shirt person.
Luv u totes lol g2g ttyl

Hurdling into the new year. We’ll see you on the other side. Goodnight, goodnight.
12/31/2025

Hurdling into the new year. We’ll see you on the other side. Goodnight, goodnight.

Happy Holidays from the PSI team dungeon to you and all of your best friends! Tis The Shirt Season!
12/25/2025

Happy Holidays from the PSI team dungeon to you and all of your best friends! Tis The Shirt Season!

We’ve attended a lot of amazing events and traveled to some unbeleivable places this year. Its been truly amazing. Speci...
12/22/2025

We’ve attended a lot of amazing events and traveled to some unbeleivable places this year. Its been truly amazing. Special shout out here to a team that shares our love of the tube steak. Over 5000 hot dogs cooked and consumed in one beaufitul day. .mtb , bunch of heros.

Party Shirt International’s Eggs-Over-Easy-Last-Minute Guide to Gifting. Good luck trying to get these in time for Chris...
12/17/2025

Party Shirt International’s Eggs-Over-Easy-Last-Minute Guide to Gifting. Good luck trying to get these in time for Christmas!

30% off all long sleevers today through Cyber Monday! This is your moment to grab that layer you mentally own. Discounts...
11/30/2025

30% off all long sleevers today through Cyber Monday! This is your moment to grab that layer you mentally own. Discounts applied at checkout!

Happy Halloween, you psychopaths. Someone’s bad meow meow has been standing on our porch like this since we announced FR...
10/30/2025

Happy Halloween, you psychopaths. Someone’s bad meow meow has been standing on our porch like this since we announced FREE SHIPPING.

Use code SPOOKYSEASON. Offer ends 11/2!

Late-stage capitalism doesn’t stand a chance against this much leisure.
07/20/2025

Late-stage capitalism doesn’t stand a chance against this much leisure.

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Salt Lake City, UT

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