B1 Archive Checked Flannel Wool Shirt — Black

B1 Archive's checked flannel shirt blends wool, alpaca, and polyester in a sharp black and cream plaid weave. Two buttoned front flap pockets provide utility alongside a relaxed spread collar. The composition—55% wool, 25% polyester, 10% alpaca wool, 5% acrylic, 5% nylon—delivers warmth and structure. Style it layered under outerwear or worn open as a casual overshirt.