Purchased a year ago and used for about 5 mountain trips. Washed it every time. Photo 5: There are some slight white stains, but they are not noticeable. Please refrain from purchasing if you are concerned. ------------ The CLEAN OUTDOORS series expresses the feelings of outdoor players who care about nature. Based on Clef's popular 60/40 MESH B.CAP, customized for CLEAN OUTDOORS! The top button on the crown has been removed so it can be used as a helmet inner. The top button is there to prevent the fabric seams from fraying, so it has been reinforced with embroidery instead of a button. Size adjustment uses a thin belt type at the back of the head. The end of the belt can be stored inside the hat, reducing the flapping of the belt during running and interference with the back of the head when used as a helmet inner. The underside of the brim has "SAVE THE NATURE" embroidered on it. The size adjustment belt at the back of the head accommodates a wide range of head sizes. It is designed to be very active, so please use it throughout the year. #clfe #mountaineering #cap