Under Armour Apparel Size Chart UA Swyft does it all: dries incredibly fast, won't cling, stretches more, and feels like you're wearing nothing. This racer back tank has dropped armholes for extra mobility, and an extended shaped hem for better coverage. Its UA Microthread fabric is chafe-free and quick-drying. The ultimate distraction-free running gear. Features: - Fitted: Next-to-skin without the squeeze. - UA Microthread technology in the fabric dries faster, won't cling to you, won't chafe & stretches without absorbing sweat - Material wicks sweat & dries really fast - 4-way stretch construction moves better in every direction - Dropped armholes & classic racer back design for extra mobility & range of motion - Dropped, shaped hem for enhanced coverage - Reflective logos deliver greater visibility on low-light runs - Jacquard back detail - 50% Polyester/50% Elasterell - Only available to ship within the USA