Jeff Stull is president of International Personnel Protection, Inc., which provides expertise and research on the design, evaluation, selection and use of personal protective clothing and equipment, and related products to end users and manufacturers. He has conducted numerous studies related to the effectiveness and performance of protective clothing and equipment in a variety of applications. Stull is a member of several NFPA technical committees on emergency responder protective clothing and related equipment. He is well published in all areas related to protective clothing and equipment, including peer-reviewed articles related to protective clothing performance. He writes a regular PPE-focused column for FireRescue1.