Smooth, soft anti-pick, anti-pill fabric has a cleaner, snag-free finish / 4-way stretch construction moves better in every direction / Material wicks sweat & dries really fast / Anti-odor technology prevents the growth of odor-causing microbes / Durable rib-knit collar / UA Sideline / Replaces styles 1233723 and 1287622. Complies with Prop 65.