"Women's On® Core Tank: The On® Core Tank is a lightweight women's running tank built for everyday training and warm-weather miles. Its breathable, streamlined design keeps things simple so you can focus on the run rather than what you're wearing. Whether you're logging easy miles, pushing through a harder workout, or heading to the gym, this tank moves with you without getting in the way.The main fabric is 92% polyester and 8% elastane, a blend that supports natural movement through the shoulders and torso while helping moisture move away from the skin during harder efforts. The stretch in the fabric keeps the fit comfortable without feeling restrictive, and the streamlined cut works just as well layered under a jacket on cooler mornings as it does on its own when temperatures climb.Why Our Fit Experts Love It""I reach for the On Core Tank when I want something I don't have to think about. It's lightweight, moves well, and the fabric doesn't cling when I start to sweat. It's the kind of tank that just works for everyday runs and gym sessions without any fuss."" - Sawyer, Road Runner Sports Fit Expert, Wilmette ILWho It's Best ForThe On Core Tank is a strong choice for women who want a no-fuss running tank for daily training, warm-weather runs, or gym workouts. If you prefer a lightweight, breathable top that moves naturally and layers easily, this tank covers the basics without overcomplicating things. It suits runners who want reliable moisture management and a clean fit they can wear season after season. VIP Family members can take the Core Tank for a 90-Day test drive with our Perfect Fit Guarantee."