On Running Core Long-T - Women's long-sleeve and Shady Blue — clean

and Shady Blue — clean colorways that work as a mid-layer or standalone piece

Zero-cushion construction puts you as close to the ground as possible for a responsive

A zippered pocket keeps your essentials secure

and fights odor

Lightweight woven construction moves air well in Southern heat and packs down flat when you need it out of the way

On Running Core Long-T - Women's long-sleeve and Shady Blue — cleanBuilt for cool weather training runs and brisk morning miles, the Core Long T is our pick for women who want a clean, low profile base layer that actually moves. The 92% recycled polyester and elastane blend wicks moisture and stretches with you, so you're not fighting your shirt mid run. Available in Black and Olive, it works solo or under a shell when temps drop. 92% recycled polyester and 8% elastane construction wicks moisture and moves with your