Mike Trout Los Angeles Angeles Gray MLB Youth Cool Base Replica Away Jersey Officially licensed apparel by OuterStuff 100% Polyester Double Knit - Machine Washable - Tagless neck for better comfort Made with Cool Base  technology interlocking moisture-wicking fabric for a lightweight, breathable feel Stitched/sewn team logo at front - screen print player's name and number on back Rounded hem with Heat-sealed jock tag above left hem - Youth 8-20 sizes