Built By Resistance Tee

Strength isn't given. It's built against resistance, rep by rep. 💪

Sizing Guide

Find your corresponding size on the chart to guide your purchase. Measurements are in inches.

Satisfaction Guaranteed

Free Returns

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The Important Stuff

🏋️ The Gear That Earns Its Sweat

💪 Gildan Softstyle® 64000

💪 Unisex fit

💪 100% ring-spun cotton (fiber content may vary by color)

💪 Light, breathable fabric

💪 Runs true to size

💪 Made, packaged, and shipped in the USA 🇺🇸

Fitness Apparel That Gets It.
For lifters who know "one more rep" is never just one more.

Actually Comfortable

💪 Ring Spun Cotton. No Weak Fibers Allowed
Softer, stronger, and tougher than your average cotton. Pre-shrunk so your fit stays locked in, wash after wash, no matter how many times you sweat through it.

🌬️ Breathable Lightweight Fabric
4.5 oz of pure airflow. Light enough to keep you cool through morning cardio and comfortable enough to wear straight into the rest of your day. No excuses to take it off.

✅ True-to-Size Unisex Fit
A relaxed, easy silhouette built to fit real bodies. Throw it on, look good, feel good. Simple as that.

Made for Reps & Real Life

🔩 Built Like a Tank
Double-needle stitching at the shoulders, armholes, neck, waistband, and sleeves. This tee isn't tapping out anytime soon, wear it hard, wash it often, repeat.

💎 Collar That Keeps Its Shape
Quarter-turned construction means no annoying center crease and a collar that stays fresh rep after rep. Looks as good on day 100 as it did on day 1.

🏷️ Tear-Away Label. Zero Itch, Zero Drama
Rip it out, never think about it again. Clean neck, no residue, nothing to distract you from the grind.

Changed Your Mind?

🔄 30-Day Money Back Guarantee
Love it or we'll refund it. No drama, no hoops to jump through. We back our tees like you back your training, fully committed.

🇺🇸 Printed in the USA
Every US order is printed and shipped right here on home turf. Fast, local, and proud of it.

Made for the Gym. Worn Everywhere.

Big lifts. Bad jokes. Everyday comfort. 💪

From crushing your workout to grabbing coffee or enjoying a well-earned rest day, Under Tension tees are made to fit your lifestyle.

Soft, comfortable fabric. Bold designs. Gym humor that speaks for itself.

Because your personality doesn't clock out when you leave the gym.

Train in it. Chill in it. Live in it. Repeat.

FAQs

Where are you located?

We are a US-based company. We print our t-shirts right here in the USA, like all US companies should. We have printers in both Florida and Texas.

Will I get a tracking number for my order?

Yep! As soon as your order ships, we'll email you the tracking info. Refreshing it 37 times a day is optional.

What materials are your products made of?

Materials vary slightly by tee and color. You'll find the exact details on each product page. Our priority is simple: soft, comfortable tees you'll actually want to wear.