Tyndale Men’s Size XL Gray FRMC Interlock Long Sleeve Flame Resistant T-Shirt. Model: M020T. Made in the USA. A blend of modacrylic (which is what makes it flame resistant) and cotton. One pocket on the chest. Moisture wicking. From 2011.

Perfect layering piece for people who work in a profession where they might need flame resistant gear.

Approximate measurements:

Chest 48”

Length 28”

Looks to be in excellent condition.