How do merchants stay warm in winter?

Merchants stay warm in winter by wearing layered clothing made from insulating materials, such as wool or thermal fabrics, to retain body heat. Many also use portable heaters or heat lamps in their shops to create a comfortable environment. Additionally, hot beverages and warm foods can help keep both merchants and customers cozy while they conduct business. Proper insulation and draft-proofing in their retail spaces also play a crucial role in maintaining warmth.