This is a Outerknown Blanket Shirt button down in men’s large in heather grey. From company’s website: “Often imitated, never duplicated, this is the coziest shirt ever made. Outerknown's most beloved item for all seasons and quality that feels so damn good every time you throw it on. Endlessly versatile and always essential, you'll wear this layer for years to come. Crafted from a soft, lofty organic cotton twill with buttons made from nuts. Features chest pockets with button flap closure.”