Final answer:
Welding leggings, made from leather or FR rated fabric, protect the lower legs and feet from dangers like molten metal and welding sparks during welding activities, and are part of a welder's essential PPE along with gloves, safety glasses, and steel-toed boots.
Step-by-step explanation:
The type of Personal Protective Equipment (PPE) that is made from leather or FR rated (fire resistant) fabric and is designed to protect the lower legs and feet from molten metal and welding sparks is known as welding leggings. These are tailored to provide coverage for the part of the body that is most at risk during welding activities which include the exposure to extreme heat and potential skin damage from hot materials. Welding leggings are worn in conjunction with other PPE such as welding gloves, safety glasses, and steel-toed boots that provide additional protection for the hands, eyes, and feet respectively.