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: 4.9 / 5 from 31 reviews.
High-quality shirts that wash up beautifully and spectacular designs !!
love this company
Big fan of Triangle Threads with the Scotland collection. Have three already and hoping for more. Most recent is my Highland Coo shirt. Love it cause I’m Scotish and I drink ice coffee so what could be better. I left you with an idea on my video.
Best wishes and keep doing what you love ❤️🏴
Store owner replied:
Scott! Looking good! This is awesome. And yes, I like the idea for a rampant lion shirt with "Never Yield" on it as well. It's going on my to do list immediately. Thanks so much for supporting our small family business, means a ton! - Chris
Just got back from Scotland and shirt was here wife and daughter love them
I got myself this t-shirt as a celebration for some Health improvement, weight loss and just overall feeling better about myself! This was my gift to me! I love it! It truly is one of the softest t-shirts and it's going to be my go-to on a weekly basis!
I am pleasantly surprised by the excellent quality of both the shirt and the printed image. Even the details such as the ribbing in the coo’s beanie are very fine.
I love it, but it was ordered for my daughter as a Christmas present. So, i can't really do a video or picture. i know she is going to absolutely love it.
Great quality shirt. Living in Boston, the is a great take on the recent visit of the Tartan Army. Our famous love for Dunkin Donuts and a Highland coo - what more could you ask for?
This was a great order from start to finish. I wore it on Tuesday (Coos Day) and I've never gotten so many compliments on a shirt before! I was blown away. I made sure to tell everyone where I bought it!
Very cute t-shirt! Love the true navy color and the highland cow is adorable. My only complaint, and it's a very small one, is the short sleeves are a little long for my liking. Fabric quality is excellent.
Love my new shirt! It’s very well made and a good quality shirt! The only hiccup I had was the shipping and not being delivered on time. It took a few extra days but I don’t think that was the fault of Triangle Threads. Still very happy with my purchase!
Just got this shirt yesterday and couldn't wait to put it on. It's soooo very soft - I LOVE it. I post a pic of a coo every Tuesday (CoosDay) on social media and you can bet I will make sure to wear this shirt when I do. If I could give it ten stars I would!
I love my highland cow t-shirt! It arrived sooner than expected. The t-shirt is so soft and fits great. I’ll be ordering more t-shirts I’m sure. If I could give more stars I would!
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.