The Under Armour Men's Threadborne Siro Short Sleeve Shirt features the next generation of UA innovation - Threadborne™ Siro. It feels insanely soft, is extremely light & dries incredibly fast. Anti-odor technologies keep the funk at bay, so you're sure to have a new go-to shirt for hitting the hardest of workouts.
Fuller cut for complete comfort
All Threadborne technologies have one goal: push the limits of design & manufacturing to reach new levels of comfort & performance
Threadborne Siro fabric feels insanely soft, is extremely light & dries incredibly fast
Anti-odor technology prevents the growth of odor-causing microbes