Eastbay Poly Baseball Pants - Boys' Grade School Take the field with the Eastbay Poly Baseball Pant and get a proven winner. This 100% polyester knit baseball pant features moisture-management fabrication that will wick sweat away from the body leaving you cool and dry during the hottest moments of the game. These pants also offer a back pocket, tunnel belt loops, elastic leg openings and a two snap waist closure. Double knit knees add durability. Join a winning team with the Eastbay Poly Baseball Pant. 240gm. Imported.