This shirt has excellent flame retardant and the fabric is very soft and comfortable. The main components are cotton and nylon, using natural aramid sewing thread super soft FRARCTEX FR fabric. The special feature of this shirt is that it is flame retardant and meets multiple standards. This shirt is hygroscopic and breathable and can be used as a worker's choice in autumn or when the weather is cool, keeping you warm and comfortable. The colors are diverse, so you can easily choose your own work clothes according to your work needs, so as to give full play to its greatest advantages.