Who Is This Product Best Suited For? The Syzmic ZW134 FR Shirt is tailored for professionals who work in high-risk environments where fire resistance is essential. Ideal for electricians, welders, oil and gas workers, and anyone needing a reliable, lightweight FR garment that delivers both comfort and protection. With sizes ranging from S to 5XL, and even 7XL, it’s designed to fit a variety of body types, making it the trusted choice for those who prioritize safety on the job.