To keep your flannel shirt soft, follow these steps. Wash it with a gentle cycle and cold water, using mild detergent and avoiding fabric softeners. Air dry the shirt instead of using a dryer, and shake it out and smooth it after drying. When ironing, use low heat. Store the shirt in a cool, dry place. Regularly brush or lint roll it to remove fuzz or debris. Brush or lint roll to remove fuzz or debris. https://www.flannelclothing.com/7-dapper-ways-to-rock-mens-flannel-shirts-this-year/