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 35 reviews.
Great shirts for our family vacation. We got lots of compliments from other park goers! Customer service was top notch, and I highly recommend their products. The shirts were soft, true to size, and there were so many colors to chose from!
I just love this T-shirt. It’s a very pretty shade of purple and the fabric is soft. I really love the design on the top with a list of national parks in the USA. Great shirt!
Love the color I have taken pictures of it and sent it to my family and friends. Some of them were like where is Denali so we had to look for that. Another one was it doesn’t say the Shenandoah Valley, and it was like yes it’s right above the yellow printing at the bottom. So I could see that that will almost be one of the things that everybody says when they look at it – where is the park that I like so much. So it’s fun, and it’s great to talk about how wonderful the national parks are. Thanks.
I bought four shirts in this order, two of them have the rainbow effect naming all the parks on the front. The other two have a small logo on front side and all the national Parks’ symbols covering the back side. I love both designs, and the soft feel and touch of the fabric. The neck is a bit snug on the medium, but will probably stretch out with wear. These shirts are gifts for my grandsons and granddaughter, and I hope to get pictures during the holidays. Definitely five stars to all four.
Excellent quality shirt, but it arrived with a small pea-size hole near the neck line. I took pictures and contacted customer service, and they are sending me a new shirt. Great people to do business with - highly recommend 👌
It was just what I wanted-I feel strongly about saving our National Parks and this shirt will tell others how I feel when I wear it. I love that it has the parks listed-every time I wear it, I look for a memory.
The shirt is beautiful and I love the messag . I thought based on other reviews that it would be softer. It is a little tight as I like my shirts baggy. I cannot wait to wear it hiking in National Parks.
I love my "Protect Our Parks" tshirt! It is one of the best quality shirts I have ever ordered...very soft and true to size. I would definitely order from Triangle again.
I bought 2 shirts for my daughter and son-in-law. The T-shirts are a nice medium weight material and the colors are exactly as pictured. The design and print are vibrant and beautifully complement the shirt color. I know they’re going to love them.
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.