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Easy returns & exchanges, 2-year warranty
Shop with confidence. If you're not completely satisfied with your purchase, you may return eligible items within 30 days of delivery for a full refund.
Once we receive and inspect your return, we'll notify you of the approval status. If approved, your refund will be automatically issued to your original payment method within 7 business days.
For complete details regarding return eligibility and exclusions, please review our Return & Refund Policy .
Every MIER-branded product is backed by a 2-Year Limited Warranty covering manufacturing defects in materials and workmanship for the original purchaser from the date of purchase.
Learn more by visiting our Warranty Information page.
MIER RePETek™ TempoCool Long Sleeve Shirt is designed for those who push their limits outdoors. Whether you're running, hiking, or enjoying the sun, this lightweight, high-performance shirt keeps you cool and protected with its UPF 50+ rating and breathable fabric. Reflective details and a sleek, flattering fit make it the perfect choice for any active adventure.
Join the movement for a greener tomorrow! Order your performance long sleeve made from recycled fabric today and run with purpose.
This sun shirt runs a little big, but is otherwise as listed. The side slits were higher on me than expected, but didn't show too much because of the way it drapes. Tag is long and stiff, I'd plan to cut it out. Washed and dried well. Easy to care for with tumble dry low.
I love this sun shirt! It is the perfect size and it is light weight. Looks well made. Very pleased.
I expected this top to fit snuggly and it does, true to size. I really like the side slits, which make movement more comfortable. The material is lightweight, not see-through, and comfortable for exercise and walking.
It's perfect for layering or wearing on its own, and it kept me warm before our marathon. Great comfort and fit overall!
Very nice t-shirt. Good quality, smooth fabric. Long enough to tuck in even with the curved hemline. Packed tightly for a trip to Africa and didnt wrinkle.
These are a nice fit, true to size. The color is really nice and the fabric feels soft on the skin. Overall very good quality.

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