Great hat what materials and workmanship concerns. Very soft and not suppressed. Flat seams are not noticing. Who wants to wear them as helmet cap makes no mistakes when buying. My head circumference = 56 cm. Size S / M but sat quite loose. At 57 cm head circumference it would be ideal. The cap is very thin, less than 5 degrees it is no longer enough. Interior very light padding. Since I wanted to wear the cap solo she's too thin and sits at 56 cm head too loose. Like everything else in Gonso also falls this hat made larger. Otherwise, Top Hat. Unfortunately I have to send them back.