Cap seems to be made of good quality materials. I am only giving 4 stars based on the fact that there are 6 or 7 trailing thread ends, an inch or so in length along seams on the inside of the cap. They do not seem prone to run as I pulled on a few, so I think I will snip them off . I don't think they will have any impact on the durability of the cap. Time will tell.
Rating: [4 of 5 Stars!]