Here's what other sites are saying:
The Brooks Nightlife Equilibrium top enhances your visibility and helps regulate your temperature. Moisture-wicking, quick-drying polyester is blended with spandex for top-notch performance and high mobility. Mesh inserts under arms increase ventilation. Flat seams feel comfortable against skin; reflective highlights increase visibility in low light from any angle. The Brooks Nightlife Equilibrium top offers a close-to-body fit. Closeout.
- REI refers to the men's version