These aren't your average tees. We print exclusively on genuine Comfort Colors® — heavyweight, garment-dyed, 100% ring-spun cotton that's soft from the very first wear and only gets better with age. Built to last for years, not just washes.
★★★★★ 3,100+ Five-Star Reviews
Real People, Real Service
That's us — Chris and Rachel. When you email Isle & Glen, one of us personally reads it and replies. Quick answers, honest help, and if anything's not right with your order, we'll make it right. Consider us family.
Located in the U.S.A. 🇺🇸
Family-Owned Small Business
Isle & Glen is a truly small business — one family and a few helping hands. Every design is our own, and every shirt is printed to order and shipped right here in the USA. When you buy from us, you're supporting a small American shop.
Customer Reviews
Overall rating: 4.8 / 5 from 300 reviews.
Love the whole idea of it!
Got lots of looks and smiles the first time I wore it.
The shirt looks great and feels even better with that classic Comfort Colors quality. I love the retro look of the three stripes and the silhouette of the palm trees. It reminds me of summertime trips as a kid, heading down to South Padre Island to enjoy the sun, the breeze, and a dip in the Gulf of Mexico.
I’m proud to wear this quality tshirt with colorful graphics and an obvious message - do your history homework (if you can read). Mexico and the Gulf of Mexico were here long before Murica.
You can't change the name of The Gulf of Mexico! Wearing this T-shirt is my flip-off to those who THINK they have changed it. I've already received compliments on it. Will continue to wear it proudly.
Love the shirt, feels great. I wear it as my version of 'Let's Go, Brandon!' Only neg: it's a tight large, I think, maybe, or I've been eating too well, I dunno. But being all cotton, beware of shrinkage.
I ordered three different styles with this order and I love them all. I’ve ordered several times in the past from Triangle Threads and their products are well made, reasonably priced and prompt in their delivery.
This is actually my second Gulf of Mexico shirt. I have worn my first one so much its looking haggard. I'm still wearing it too. I just wanted a new one to wear on trips! Most of the comments I get are positive and I tell people where and how to buy one. I've had a few negative comments but blow those off by considering the source of the comments. I got my husband the Dry Tortugas and Think Outside shirts. He loves them too. Thanks for making good quality merchandise.
Sizing can be tricky, so there's a full measurements chart on every product page. Because Comfort Colors are garment-dyed and preshrunk, we recommend sizing up if you're between sizes or just prefer a roomier, lived-in fit. Our tees come in S–4XL.
What are the shirts made of?
We print on Comfort Colors 1717 — the heavyweight, garment-dyed, 100% ring-spun cotton tee that's considered the gold standard for vintage-feel shirts. Soft from day one, preshrunk, and made to get better with every wear.
Where are your shirts printed?
Right here in the USA. Every shirt is printed to order and ships from within the US, so nothing sits in an overseas warehouse or travels across the world to reach you.
Are Triangle Threads and Isle & Glen the same?
Yes — same company, same two people, same shop. Isle & Glen is simply the new name.
Triangle Threads is where we started. We began by designing shirts for America’s National Parks and the wild places we love to explore.
Ireland and Scotland were always our other great passion, and somewhere along the way that passion took over and became the full-time thing. Isle & Glen grew out of it.
So if you spot Triangle Threads on a package, an email, or somewhere on this site — that’s still us. Same family, same care, same shop. Just a name that finally matches what we love making most.
How long until my order arrives?
Every shirt is printed to order just for you. Orders usually ship within a few business days, and delivery takes another 3-5 business days — most land on your doorstep within a week. Shipping is always free on orders over $75.
Can I change or cancel my order?
Yes, within 24 hours of placing it. Every shirt is printed to order, so after that it's usually already in production. Just email us at support@isleandglen.co with your order number and what you'd like to change.
What if it's not right?
If anything arrives damaged, defective, or just not quite right, email us at support@isleandglen.co within 30 days and we'll make it right with a replacement or a refund — no questions asked.