Under Armour FLY BY 2.0 SHORT Under Armour FLY BY 2.0 feature durable inner shorts made out of lightweight material. The used material wicks moisture away and dries faster. The mesh panels are soft to the touch, increase breathability, and help effective heat transport. Highly reflective elements were added for safe workouts in low visibility conditions. Under Armour FLY BY 2.0 SHORT