STRETCH CAPGREAT FOR BIKERS UNDER HELMET OR FOR SPORTS OR WEAR ALONEEXPANDABLE FABRICSTOCKING CAPONE SIZE FITS ALLSTRETCHABLE TO FULL SIZE & FLEXIBLE FOR THE PERFECT FITSTRETCH MATERIAL FITS EASILY AND COMFORTABLE100% SMOOTH FINISH DELUXEFASHIONABLE HAIR PROTECTIONTHIS CAPDOES NOT HAVE A LABEL SO AM NOT SURE OF MATERIAL CONTENT BUT IT IS STRETCHABLE AS SHOWN BY THE PICTURE WHERE IT IS STRETCHED OVER THE HEAD MODELTHIS CAP IS USED BUT IN EXCELLENT CONDITION.
