Workwear Underwear or Thermals for those cold working environments are yet anther area of your work clothing requirements that are covered by JKL Clothing. We have a range of underwear garments that are specifically designed to meet the demands of the use they are required for. For example our flame resistant underwear range ensures you are protected when working in fire or flame environments should the flame penetrate your outer layer of clothing. The majority of our underwear garments are simply designed to keep you warm. Particularly useful during the winter months or if you work in a cold store area.