LL Bean Womens Large Button Up Shirt Top Blue Check Long Sleeve Textured Pockets

LL Bean Womens Large Button Up Shirt Top Blue Check Long Sleeve Textured 2 breast Pockets. The color stated is blue / 2 shades of blue Tag reads ODF 20 I do not know what that means. I attempted to look it up with no success size large 89% polyester 11% rayon Length 27" Arm 27" Chest 46" Excellent pre owned condition, no stains holes tears or runs in fabric Tote M5