Eastbay Baseball Compression Top - Men's Wearing clothes close to your skin enhances your performance by removing the friction and distraction of loose apparel. The Eastbay Baseball Layer Compression Top takes that a step further by incorporating EVAPORô permanent moisture-management fabric that wicks unwanted moisture to the surface to be evaporated, leaving you cool, dry and ready for more. The chafe-free construction lets you focus on your game and your training with features like flatlock seams and a tagless interior. Compression fit further decreases friction and chafing and helps support the muscles during vigorous activity. 84% polyester/16% spandex. Imported.