Men's large Nike BREATHE TRAIL SLEEVELESS Active Tank The Breathe SL Trail Tank Top is a full-functioning athletic tank meant for long runs through National Park country. There's nothing worse than a hydration pack that rides up over the course of a long run, so Nike designed the Breathe SL to have a longer hem to keep the tank where it should be during long runs. Dri-Fit fabric for enhanced drying and wicking Reflective details for low-light conditions Full back mesh for total breathability