Blurb from Uniqlo's website…
Our performance men's tights give secure support for even the most intense movement.
- Excellent stretch for fitted comfort with any type of movement.
- Gently snug fit makes them a great choice for athletics, standing work, or traveling.
- Exposed elastic waistband provides a superb fitted feel.
MATERIAL - Body: 67% Polyester, 21% Cupro, 12% Spandex/ Waist: 53% Nylon, 32% Polyester, 15% Spandex
CARE - Cold Machine Wash
Doesn't polyester lock sweat in ?!