wig is made of the best and most realistic synthetic heat-resistant fibers. This high-quality material can not only be used for a long time, it is very close to the real hair, and it can make the wig's curly hair shape last longer and look better. Adjustable Cap Size: This is a medium cap (Average Cap Size) with adjustable straps of 21"-22.5". You can wrap it around a fixed position to adjust different head sizes. It looks natural and gorgeous from any angle, comfortable to wear, and suitable