I need some thin, cotton leggings. I have contact dermatitis and when I sleep in bedding that has been laundered using things I am allergic to (most laundry products) I get painful rashes where my skin has rested in contact with the bedding. So when I go away I sleep in leggings and a long-sleeved, high-neckline t-shirt. This is usually fine in a UK summer, but I can struggle in a hotter climate.
Hence my search for thin cotton leggings. Or cotton-viscose.
All my current leggings are properly opaque. Online retailers don't care to advertise that their leggings are so thin that you will have no secrets, but I suspect that's what I need.
Help?