Sympathize with all of those who are going through this. I have contact dermatitis with any clothing that contains nylon in it. I found out when I wore a coat that had an outer shell made of nylon. The nylon in the collar made contact with the skin on the back of my neck. I got a rash there. It felt like a mild sun burn. While I have had no problems wearing the uniform as a driver helper, but then again I am wearing it in the winter. I did check the uniform I have this year. The shirt and jacket are both Twin Hill and the pants are Riverside. Since I always wear the jacket, no one ever sees the UPS shirt underneath. I was thinking that perhaps I'll just wear my own short sleeved brown linen shirt instead underneath the jacket.