Possible Clues:

• Suit fabrics
• Some jacket fabrics
• Coarse woolens
• Coarse wool fabrics
• Thick woolen fabrics
• The mourning garb he discarded -- rough woollen clothes
• The northern chaps looking thin and weak in country clothes
• Flannels
• Thick woollen fabrics, for wear in the countryside perhaps
• Houndstooth and herringbone