Under Armour Polo

This is an Under Armour blue collared t/polo. I tried looking for the tag that states what the material is but I couldn't find one. It is very stretchy and seems like it'd be very comfortable/lightweight. I'm assuming this would be perfect for golfing. It isn't brand new, it has been worn a few times. I don't see any holes or major stains but I'll mark down just in case.