Working around heat, sparks, or potential flash fires? This Wolverine shirt is built for safety without sacrificing comfort. It's a flame-resistant (FR) plaid twill shirt made from 90% Pima cotton and 10% nylon. It's been double-dipped in FR treatment to protect every fiber, and it meets the NFPA 2112-2012 standard for industrial flash fire protection. That means it's designed to self-extinguish and not melt onto your skin. It's also treated for minimal shrinkage (under 3%) and uses low formaldehyde. Has a classic button-down collar, two chest pockets with flaps and buttons, and plastic buttons. It looks like a regular work shirt but has the hidden safety features you need for welding, oil & gas, electrical work, or any job where FR clothing is required. Stay safe and look good doing it.