... .grey hair:synthetic or human hair7.hair length 4-20"8.base style: mono with PU ... around9.base color:custom colors, or skin color10.hair type:human hair or synthetic ... , HairReplacement products.3) Hair Color: various colors available for choice, such as single color 1, IB,2 ... brown,black, transparent, etc10) Bleached knots and, single knots, double knots are available11) baby hairs around ...