【Specification】Micro ring hair extensions, 14-20inch, 50g/pack, 1g/strand,50strands/pack. Generally, 1-2 packs is enough for add volume,3-4packs for full heads. 【Material】Real human hair, soft, smooth, silky straight, no shedding,no tangling, harmless to your hair and scalp. 【Micro Bead】The ring is very small,similar color with the hair,which is undetectable and natural,can hide inside your own hair perfectly,do not rub your head whiling sleeping. 【Hair Restyle】Can be straightened, curled and restyled,but the temperature is below 180℃. Can only be dyed to darker color,before dyeing,please take a strand hair for test first. 【Dye or Bleach】To ensure that all hair extensions are the same color , so we have dyed the hair already,but if you want to dye the hair , please try dyeing the hair in a darker color. Please don’t bleach (it may damage the hair)! human hair