Nice  construction  breaths well  , I did not buy this,, a friend did. He could not wear it as its nylon and most men including ME
are allergic to nylon. I accepted the gift wore it,, same  reaction  ,, great construction,, breaths well ,,light , easy to wear.
However the @ &(*(&@%  nylon itches  especially around the head band,,,,. SUGGESTION  give this to a woman as women are NOT
allergic to nylon, its  a nice cap.  Men ,,think twice before you buy. Siggi get the cotton sell that as your caps are really good , but nylon, rubber and men do not  mix, please!!