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Boston is more than 26.2.
It’s the quiet focus before the start. The surge of cheers through Wellesley. The grind up Heartbreak. The final turn onto Boylston when you find one more gear.
The Unicorn Standard – Boston Core Zero Women’s Tank was built for that kind of day — and every mile that builds toward it.
Crafted from our lightest-weight performance knit, this tank feels nearly weightless. It’s unbelievably soft with effortless stretch, and the subtle grid texture works to pull sweat off your skin while staying ultra-breathable. When the effort rises, it keeps you cool and dries insanely fast.
The classic, full-length, streamlined cut with a racerback gives you a singlet designed to move with you — never against you. No distractions. No cling. Just smooth, fast comfort from first mile to finish line.
Light. Fast. Ready for big-mile moments.
Boston is built in the training. This is the tank for all of it.
This tank fits true to size.
Cold wash separately before first use. Tumble dry low. Do not iron or bleach.
92% polyester 8% spandex
Our most premium performance fabrics. A knit, engineered to let heat out and wick sweat away quickly. Bonus points for beings softer than a pillow.
Our most premium performance fabrics. A knit, engineered to let heat out and wick sweat away quickly. Bonus points for beings softer than a pillow.
Overall rating: 4.5272727 / 5 from 55 reviews.
The Womens Core Zero Running Tank is praised for its beautiful design and great fit, making it a popular choice among customers. The tank is noted for its high-quality material and perfect fit, which meets various needs.
Review topics: ["fit","material","quality","shirt","fabric","design","tank"].
"I like everything once I get it to suggestions takeoff the extra small size that is automatically populated let the person choose size instead of you picking one I’m still waiting for my return re-shipping to the right size it’s taking way too long and FedEx sucks every time I get a tracking number with a date they push it out a few days use somebody else"
"Love this running tank from Sprints! It is super lightweight and breathable, even when I sweat through it. Wore it during my last 5k where I set a Personal Best."
"Just like all of the core zero framework tanks it’s exceptional. I love the feel of the material and once the sweat starts it really shines. The fabric although full of sweat stays light and I stay cool during my run."
"I have a couple Sprints caps so I thought I'd try a tank since I love the caps. The material feels good quality and it has been great running in it. I'm in between a small and medium and the medium fit perfectly. I ended up buying 2 I love it so much!"
"I love this material & style of tank. The cropped is the perfect height & the design is fun. I wish it came in more colors & other designs."
"Gorgeous print, vibrant colors, and perfect design. Like wearing air. Size up for a looser fit."
"Sent the wrong size."
"Sent the wrong size."
"Great shirt. Cool in the heat and beautiful colors"
"The perfect running shirt. And now I use it as my all the time shirt"
