T-shirt Run 365 is built for the full season and combines lightweight performance with targeted ventilation. Made from 100% recycled polyester, T-shirt Run 365 is a lightweight, versatile, and comfortable option for all running conditions. Designed to deliver a performance fit during workouts or competitions, this shirt features strategically placed mesh panels in key heat zones to maximize airflow and enhance ventilation where it matters most. The soft, quick-drying fabric wicks moisture efficiently and feels smooth against the skin, helping you stay dry and focused through every session. Durable enough for daily training, yet light and breathable for race day, it adapts to your intensity and environment. A side split allows unrestricted movement, while a bonded hem minimizes chafing. Finished with a reflective logo for visibility, this piece is part of the 365 system – designed to mix and match across the collection to support your run, year-round.