Why SUM SHIRTS Uses Triblend for Every Unisex T-Shirt

You know that one T-shirt you always grab first? The one that gets washed and somehow ends up right back on your body before it ever makes it into a drawer?

That’s the feeling we’re going for at SUM SHIRTS. A clever design gets your attention, but comfort earns a shirt a permanent spot in your rotation.

All SUM SHIRTS unisex T-shirts are made with triblend fabric. We want the shirt to feel as good as the design looks, so softness is part of the starting point.

Our unisex tees combine 50% polyester, 25% combed ring-spun cotton, and 25% rayon. Cotton brings a familiar, comfortable feel, polyester contributes resilience, and rayon adds smoothness and drape.

The result is a lightweight graphic tee that’s easy to wear for game day, weekend errands, or doing absolutely nothing with impressive dedication.

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What Makes a T-Shirt Soft?

Softness comes from a combination of the fibers, how they’re spun into yarn, how the fabric is knitted, and how it’s finished.

That’s why two shirts labeled “cotton” can feel surprisingly different. The fiber content tells you part of the story, but it doesn’t tell you everything.

Fabric weight also affects the wearing experience. A lightweight tee can feel easy to move in and layer, while a heavier shirt may have more structure. Heavier doesn’t automatically mean better, and lighter doesn’t automatically mean softer.

The goal is finding a fabric that feels comfortable against your skin and fits the way you like.

What Is a Triblend T-Shirt?

A triblend T-shirt combines three types of fibers. SUM SHIRTS unisex tees use:

• 50% polyester

• 25% combed ring-spun cotton

• 25% rayon

Each fiber contributes something to the finished shirt.

Cotton brings its familiar, comfortable feel.

Polyester contributes resilience and helps the fabric maintain its shape.

Rayon adds smoothness and helps the fabric drape naturally.

Together, they create the lightweight, soft feel we choose for our unisex graphic tees. Comfortable enough for a full day out. Equally qualified for a full day on the couch.

We don’t judge your itinerary.

Cotton vs. Triblend: What’s the Difference?

Cotton T-shirts can be wonderfully soft, especially when made with combed ring-spun cotton. They often have a more structured feel, depending on the fabric’s weight and construction.

Triblend shirts combine cotton with polyester and rayon for a different feel—typically lightweight, smooth, and more fluid in how they drape.

Neither fabric is automatically the best choice for everyone. At SUM SHIRTS, we choose triblend for our unisex shirts because it delivers the comfortable, easygoing feel we want you to reach for again and again.

How to Choose Your SUM SHIRTS Tee

Since all our unisex T-shirts are triblend, you can focus on finding your favorite design and the right fit.

Start with the product’s size chart and compare its measurements with a shirt you already love.

Then choose your personality: Detroit pride, clever wordplay, seasonal humor, or a joke that feels suspiciously specific to your life.

Soft fabric. A design that makes you smile. Your next favorite shirt has a pretty straightforward job description.

Find Your Next Favorite Soft T-Shirt

At SUM SHIRTS, we’re Anthony and Alyssa—a husband-and-wife team based in Northville, Michigan, turning humor, nostalgia, and hometown pride into wearable designs.

We want our shirts to make you smile when you see them and feel comfortable when you wear them. That’s why every SUM SHIRTS unisex T-shirt is triblend.

Explore our Detroit-inspired shirts, funny pop culture tees, and seasonal designs to find one that feels like you.

Your other shirts will understand. Eventually.